Patents 5550351 - 5550606

 

 

Patent 5550351: Process and apparatus for contamination-free processing of semiconductor parts
(ELECTRIC HEATING : HEATING DEVICES : Combined with container, enclosure, or support for material to be heated : Muffle-type enclosure : Food conveying type (e.g., lunch box))

Patent 5550352: Method and device for the thermal cleaning of objects
(ELECTRIC HEATING : HEATING DEVICES : With power supply and voltage or current regulation or current control means : Automatic regulating or control means : Comprising voltage and/or current measuring and comparing or combining means : Thermomagnetic)

Patent 5550353: Induction heating coil assembly for prevent of circulating current in induction heating lines for continuous-cast products
(ELECTRIC HEATING : INDUCTIVE HEATING : Specific inductor configuration : With plural load inductors)

Patent 5550354: High-frequency induction heating coil
(ELECTRIC HEATING : INDUCTIVE HEATING : Specific inductor configuration : U-coil section : Polyphase)

Patent 5550355: Microwave oven driving control method and apparatus thereof
(ELECTRIC HEATING : MICROWAVE HEATING : With control system : Load condition sensor : Field intensity/reflection : Load sensing)

Patent 5550356: Food covering device for use with a microwave oven
(ELECTRIC HEATING : MICROWAVE HEATING : Cookware (e.g., vessel, utensil, etc.) : With cover : By fluent material (e.g., steaming, boiling, or frying, etc.))

Patent 5550357: Apparatus for producing heat energy without combustion using non-fuel fluid matter
(ELECTRIC HEATING : CAPACITIVE DIELECTRIC HEATING : Specific heating application : Fluent material : Horizontal (e.g., turntable, etc.))

Patent 5550358: Non-contacting transaction system
(REGISTERS : SYSTEMS CONTROLLED BY DATA BEARING RECORDS : Credit or identification card systems : Price determination)

Patent 5550359: Time and attendance system and method therefor
(REGISTERS : SYSTEMS CONTROLLED BY DATA BEARING RECORDS : Credit or identification card systems : Permitting access : Lost-motion mechanism)

Patent 5550360: Automatic addfare machine
(REGISTERS : SYSTEMS CONTROLLED BY DATA BEARING RECORDS : Transportation : Permitting access)

Patent 5550361: Card reader contacts and non-contact coils on a printed circuit board
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Multiple sensor : With tabular chart, scale, or graph)

Patent 5550362: Method and apparatus for calibrating a bar code scanner
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Light level control : Array)

Patent 5550363: Optical information reading apparatus
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Means to decode a 2-D bar code : Including an imager (e.g., CCD or camera-type reader) :)

Patent 5550364: Method and apparatus for spotter beam formation using a partitioned optical element
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Specific scanning detail (e.g., scanner with a specific scanning field of view) : Moving a spot of light (e.g., flying spot scanner) : Hologram :)

Patent 5550365: Method and apparatus for decoding bar code symbols using subpixel interpolation
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Reader processing circuitry : Auto-focusing)

Patent 5550366: Optical scanner with automatic activation
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Specific scanning detail (e.g., scanner with a specific scanning field of view) : Moving a spot of light (e.g., flying spot scanner) : Hologram :)

Patent 5550367: System for extending the operating range of a beam scanner
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Extended reader working range (e.g., multiple focal planes) : Using spotter beam)

Patent 5550368: Method of detecting focusing error in an optical pickup system employing a reflective knife edge to separate the optical signal for comparison
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Automatic focus control : Active autofocus : With optical storage medium; e.g., optical disc, etc. : With detector support)

Patent 5550369: Triangulation position detection method and apparatus
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Controlled by article, person, or animal : Inanimate article : Tape, drum, or disc types)

Patent 5550370: Potential sensor employing electrooptic crystal and potential measuring method
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Polarizing : Inanimate article)

Patent 5550372: Apparatus and method for analyzing foreign matter on semiconductor wafers and for controlling the manufacturing process of semiconductor
(RADIANT ENERGY : INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES : Electron probe type : Magnetic field path-bending means)

Patent 5550373: Fabry-Perot micro filter-detector
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : With conveyance)

Patent 5550374: Methods and apparatus for determining interstitial oxygen content of relatively large diameter silicon crystals by infrared spectroscopy
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : With selection of plural discrete wavelengths or bands : With radiation source : Including spectrometer or spectrophotometer :)

Patent 5550375: Infrared-spectrometric sensor for gases
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : With means to transmission-test contained fluent material : Locating infrared emissive objects)

Patent 5550376: Method of calibration of imaging devices
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : With means to inspect passive solid objects : With relative movement means : With periodic beam varying means)

Patent 5550377: Technique for balancing anger cameras using an externally irradiated crystal and single tube data
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : With or including a luminophor : With radiant energy source : Body scanner or camera : With calibration : With detector support)

Patent 5550378: X-ray detector
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : With or including a luminophor : Plural or composite luminophor : Ultraviolet light source)

Patent 5550379: Zero gain setting for discrete event processing
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : With or including a luminophor : With output system : Ultraviolet light source)

Patent 5550380: Radiation image detecting apparatus including bundled optical fibers
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Semiconductor system : Scintillation system : X-ray or gamma-ray system)

Patent 5550381: Event counting alpha detector
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Including a radiant energy responsive gas discharge device : With means to supply the gas : Radioactive gas, or with gas-borne radioactive material : With a collimator)

Patent 5550382: Process and apparatus for compacting informations to be stored and processing said compacted informations
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Neutron responsive means : Composition analysis : Spark chambers)

Patent 5550383: Remoldable thermoplastic radiation shield for use during radiation therapy
(RADIANT ENERGY : RADIATION CONTROLLING MEANS : Shields : Flexible : Hand-held)

Patent 5550384: Method and apparatus of automatically scanning for density defects in carpets
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : With indication of presence of material or feature : With defect discrimination circuitry : With translucent material)

Patent 5550385: Method and apparatus for detecting abnormal image patterns
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With image read-out : For specialized application)

Patent 5550386: Method for erasing remaining radiation image and device
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With erasure : Including emission detection)

Patent 5550387: Superlattice quantum well material
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : THIN ACTIVE PHYSICAL LAYER WHICH IS (1) AN ACTIVE POTENTIAL WELL LAYER THIN ENOUGH TO ESTABLISH DISCRETE QUANTUM ENERGY LEVELS OR (2) AN ACTIVE BARRIER LAYER THIN ENOUGH TO PERMIT QUANTUM MECHANICAL TUNNELING OR (3) AN ACTIVE LAYER THIN ENOUGH TO PERMIT CARRIER TRANSMISSION WITH SUBSTANTIALLY NO SCATTERING (E.G., SUPERLATTICE QUANTUM WELL, OR BALLISTIC TRANSPORT DEVICE) : Heterojunction : Quantum well : Superlattice :)

Patent 5550388: Heterojunction FET having barrier layer consisting of two layers between channel and buffer layers
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : THIN ACTIVE PHYSICAL LAYER WHICH IS (1) AN ACTIVE POTENTIAL WELL LAYER THIN ENOUGH TO ESTABLISH DISCRETE QUANTUM ENERGY LEVELS OR (2) AN ACTIVE BARRIER LAYER THIN ENOUGH TO PERMIT QUANTUM MECHANICAL TUNNELING OR (3) AN ACTIVE LAYER THIN ENOUGH TO PERMIT CARRIER TRANSMISSION WITH SUBSTANTIALLY NO SCATTERING (E.G., SUPERLATTICE QUANTUM WELL, OR BALLISTIC TRANSPORT DEVICE) : Heterojunction : Quantum well : Field effect device : With specified semiconductor materials)

Patent 5550389: Superconducting device
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : THIN ACTIVE PHYSICAL LAYER WHICH IS (1) AN ACTIVE POTENTIAL WELL LAYER THIN ENOUGH TO ESTABLISH DISCRETE QUANTUM ENERGY LEVELS OR (2) AN ACTIVE BARRIER LAYER THIN ENOUGH TO PERMIT QUANTUM MECHANICAL TUNNELING OR (3) AN ACTIVE LAYER THIN ENOUGH TO PERMIT CARRIER TRANSMISSION WITH SUBSTANTIALLY NO SCATTERING (E.G., SUPERLATTICE QUANTUM WELL, OR BALLISTIC TRANSPORT DEVICE) : Tunneling through region of reduced conductivity : Ballistic transport device)

Patent 5550390: Semiconductor device and manufacturing method thereof
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : NON-SINGLE CRYSTAL, OR RECRYSTALLIZED, SEMICONDUCTOR MATERIAL FORMS PART OF ACTIVE JUNCTION (INCLUDING FIELD-INDUCED ACTIVE JUNCTION) : Field effect device in non-single crystal, or recrystallized, Semiconductor material : Amorphous semiconductor is alloy or contains material to change band gap (e.g., Si x Ge 1-x , SiN y ))

Patent 5550391: Light-emitting diode and light-emitting diode array
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INCOHERENT LIGHT EMITTER STRUCTURE : With heterojunction : Plural heterojunctions in same device : With heterojunction)

Patent 5550392: Semiconductor switching devices
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : REGENERATIVE TYPE SWITCHING DEVICE (E.G., SCR, COMFET, THYRISTOR) : With means to increase breakdown voltage : Surface feature (e.g., guard ring, groove, mesa, etc.) : Radially symmetric regions)

Patent 5550393: Semiconductor layer structure having distributed strain and optical semiconductor device including such strained layer
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HETEROJUNCTION DEVICE : Field effect transistor : Having narrow energy band gap (<<1eV) layer (e.g., PbSnTe, HgCdTe, etc.))

Patent 5550394: Semiconductor memory device and defective memory cell correction circuit
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : GATE ARRAYS : With particular signal path connections : Programmable signal paths (e.g., with fuse elements, laser programmable, etc) : Combined with diverse type device)

Patent 5550395: Semiconductor device and process of producing same
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Insulated gate capacitor or insulated gate transistor combined with capacitor (e.g., dynamic memory cell) : Stacked capacitor : With means to insulate adjacent storage nodes (e.g., channel stops or field oxide))

Patent 5550396: Vertical field effect transistor with a trench structure
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Short channel insulated gate field effect transistor : Gate controls vertical charge flow portion of channel (e.g., VMOS device) : Gate electrode in groove : With charging or discharging by control voltage applied to source or drain region (e.g., by avalanche breakdown of drain junction))

Patent 5550397: Metal oxide semiconductor transistors having a polysilicon gate electrode with nonuniform doping in source-drain direction
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Gate electrode of refractory material (e.g., polysilicon or a silicide of a refractory or platinum group metal) : Composite or layered gate insulator (e.g., mixture such as silicon oxynitride))

Patent 5550398: Hermetic packaging with optical
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS) : Electromagnetic or particle radiation : Light : With housing or encapsulation : With window means : Combined with heavily doped channel stop portion)

Patent 5550399: Integrated circuit with windowed fuse element and contact pad
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INTEGRATED CIRCUIT STRUCTURE WITH ELECTRICALLY ISOLATED COMPONENTS : Passive components in ICs : Including programmable passive component (e.g., fuse) : Sides of isolated semiconductor islands along major crystal planes (e.g., (111), (100) planes, etc.))

Patent 5550400: Semiconductor device equipped with antifuse elements and a method for manufacturing an FPGA
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INTEGRATED CIRCUIT STRUCTURE WITH ELECTRICALLY ISOLATED COMPONENTS : Passive components in ICs : Including programmable passive component (e.g., fuse) : Anti-fuse : Sides of grooves along major crystal planes (e.g., (111), (100) planes, etc.))

Patent 5550401: Lead on chip semiconductor device having bus bars and crossing leads
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : LEAD FRAME : On integrated circuit)

Patent 5550402: Electronic module of extra-thin construction
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : LEAD FRAME : With stress relief : Details of insulating layer electrical charge (e.g., negative insulator layer charge))

Patent 5550403: Improved laminate package for an integrated circuit and integrated circuit having such a package
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : Insulating material : Of insulating material other than ceramic : Housing entirely of metal except for feedthrough structure)

Patent 5550404: Electrically programmable antifuse having stair aperture
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INTEGRATED CIRCUIT STRUCTURE WITH ELECTRICALLY ISOLATED COMPONENTS : Passive components in ICs : Including programmable passive component (e.g., fuse) : Anti-fuse : Sides of grooves along major crystal planes (e.g., (111), (100) planes, etc.))

Patent 5550405: Processing techniques for achieving production-worthy, low dielectric, low interconnect resistance and high performance ICS
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : WITH MEANS TO CONTROL SURFACE EFFECTS : Insulating coating : Multiple layers : At least one layer of organic material : Combined with glass layer)

Patent 5550406: Multi-layer tab tape having distinct signal, power and ground planes and wafer probe card with multi-layer substrate
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : LEAD FRAME : On integrated circuit)

Patent 5550407: Semiconductor device having an aluminum alloy wiring line
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : COMBINED WITH ELECTRICAL CONTACT OR LEAD : Bump leads : Layered)

Patent 5550408: Semiconductor device
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : COMBINED WITH ELECTRICAL CONTACT OR LEAD : Bump leads : Layered)

Patent 5550409: Semiconductor device having internal wire and method of fabricating the same
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : COMBINED WITH ELECTRICAL CONTACT OR LEAD : Of specified material other than unalloyed aluminum : Layered : At least one layer of silicide or polycrystalline silicon : Silicide of refractory or platinum group metal : With polycrystalline connecting region (e.g., polysilicon base contact))

Patent 5550410: Gas turbine electrical power generation scheme utilizing remotely located fuel sites
(PRIME-MOVER DYNAMO PLANTS : TURBOGENERATORS : Fluid-current motors)

Patent 5550411: Downhole instrument power supply system using shunt voltage regulation
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SHUNTING OR SHORT CIRCUITING SYSTEMS : Condition responsive switch)

Patent 5550412: Isolated MOSFET gate drive
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Electrical : Speed, centrifugal or kinetic force)

Patent 5550413: Elongate torque motor and angular displacement control device incorporating it
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Oscillating : Self-actuated interrupter)

Patent 5550414: Motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Inbuilt or incorporated unit : Heat-exchange structure)

Patent 5550415: Vehicular alternating current generator
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Electric circuit elements : Bicycle-hub generators)

Patent 5550416: Control mechanism of revolving speed of an electric tool
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Drive mechanism : Motion conversion : Gearing : Ignition systems)

Patent 5550417: Amortisseur winding arrangement, in a rotor for electrical, rotating equipment
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Windings and core structure : Field or excitation windings or structure : With short-circuited winding or conductor : Damper winding : Multifrequency)

Patent 5550418: Alternator for use in an automobile
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Current collectors : Fixed structure : Brush holders or rigging : Disc)

Patent 5550420: Electronic ignition apparatus
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : With mechanical energy coupling means : Voltage, spark or current generator : Underwater type)

Patent 5550421: Discharge lamp with enhanced performance and improved containment
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH TEMPERATURE MODIFIER : Double wall, jacket or casing for envelope : Sealed casing for envelope : Flow directing means in casing)

Patent 5550422: High intensity arc discharge lamp having clip member to secure base to outer lamp envelope
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH TEMPERATURE MODIFIER : Double wall, jacket or casing for envelope : Sealed casing for envelope : Flow directing means in casing)

Patent 5550423: Optical coating and lamp employing same
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH OPTICAL DEVICE OR SPECIAL RAY TRANSMISSIVE ENVELOPE : Polarizer or special ray transmission (e.g., filter) : With integrant display electrode)

Patent 5550424: Spark plug for internal combustion engines
(ELECTRIC LAMP AND DISCHARGE DEVICES : SPARK PLUGS : Non-conducting material in or adjacent gap (e.g., restricts spark) : Automatically moved (e.g., engine vibration))

Patent 5550425: Negative electron affinity spark plug
(ELECTRIC LAMP AND DISCHARGE DEVICES : SPARK PLUGS : Particular electrode structure or spacing : Non-shortest line spark and surface spark type)

Patent 5550426: Field emission device
(ELECTRIC LAMP AND DISCHARGE DEVICES : ELECTRODE AND SHIELD STRUCTURES : Point source cathodes : Rod electrode or shield)

Patent 5550427: Substrate contact electrode having refractory metal bump structure with reinforcement sidewall film
(ELECTRIC LAMP AND DISCHARGE DEVICES : ELECTRODE AND SHIELD STRUCTURES : Composite electrodes or shields : Coated or laminated : Resilient mechanical means for attaching the base to the envelope)

Patent 5550428: Frame structure of aperture grille with higher long-side frames
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Shadow mask, support or shield : With frame : With studs)

Patent 5550429: Display device
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Envelope : Coating or shielding : Light conducting fiber or rod)

Patent 5550430: Gas discharge closing switch with unitary ceramic housing
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH GAS OR VAPOR : Three or more electrode discharge device : Counter, indicator, or switching tube : Having intersecting electrode sets)

Patent 5550431: High pressure arc discharge lamp having barium hafnate impregnated electrodes
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH GAS OR VAPOR : Having electrode of alkali, alkaline or rare earth material : Coil type)

Patent 5550432: Smart adaptive vacuum electronics
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Combined cathode ray tube and circuit element structure : Inductor or distributed parameter-type inductive structure : Ray passes in or through a hollow distributed parameter device :)

Patent 5550433: Driver circuit for discharge lamps
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : WITH CATHODE OR CATHODE HEATER SUPPLY CIRCUIT : With current shifting switch)

Patent 5550434: Boost-mode energization and modulation circuit for an arc lamp
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL POWER SUPPLIES : Electric switch controlled by the radiant energy responsive device)

Patent 5550435: Field emission cathode apparatus
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL POWER SUPPLIES : Plural cathode and/or anode load device : Diverse-type energizing or bias supplies to different electrodes : Simultaneous application to a load device)

Patent 5550436: MOS gate driver integrated circuit for ballast circuits
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PERIODIC SWITCH IN THE SUPPLY CIRCUIT : Flashers)

Patent 5550437: Electronic dimmable gas tube power supply with overvoltage protection
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PERIODIC SWITCH IN THE SUPPLY CIRCUIT : Flashers)

Patent 5550438: Circuit arrangement
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PERIODIC SWITCH IN THE SUPPLY CIRCUIT : Periodic switch in the primary circuit of the supply transformer : Periodic switch selectively connectable to plural load device circuits)

Patent 5550439: Electronic ballast having pulsating output voltage
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CONDENSER IN THE SUPPLY CIRCUIT : Inductance in the condenser circuit : Strobe lights)

Patent 5550440: Sinusoidal inductorless dimmer applying variable frequency power signal in response to user command
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CURRENT AND/OR VOLTAGE REGULATION : Plural load device regulation : Variable inductance)

Patent 5550441: Parabolic correction signal amplitude control loop
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With ray deflection distortion correction or reduction : By modulation of deflection waveform : Adjacent to or integral with deflection winding or housing structure therefor)

Patent 5550442: Horizontal deflection circuit
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With ray deflection distortion correction or reduction : By modulation of deflection waveform : Adjacent to or integral with deflection winding or housing structure therefor)

Patent 5550443: Automatic beam current control circuit for multimode monitor and method thereof
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With additional control of cathode ray : Intensity control of ray : For television)

Patent 5550444: Device and process for the reversible storage of electric energy by its reversible conversion to kinetic energy
(ELECTRICITY: MOTIVE POWER SYSTEMS : BATTERY-FED MOTOR SYSTEMS : By auxiliary motor)

Patent 5550445: Generator controller and controlling method for hybrid vehicle
(ELECTRICITY: MOTIVE POWER SYSTEMS : GENERATOR-FED MOTOR SYSTEMS HAVING GENERATOR CONTROL : Control of both the generator and the motor : With motor control)

Patent 5550446: Dual slew rate circuit for driver transistors in disk drives
(ELECTRICITY: MOTIVE POWER SYSTEMS : MOTOR COMMUTATION CONTROL SYSTEMS : Control of motor load or device driven)

Patent 5550447: Pulse generating system responding to instruction pulses for generating driving pulses for diving motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : MOTOR COMMUTATION CONTROL SYSTEMS : Control of motor load or device driven)

Patent 5550448: Method and apparatus for controlling the movement of a tool
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Program- or pattern-controlled systems : Digital or numerical systems : Multifunction manipulator (i.e., Robot))

Patent 5550449: Process for driving electric, current-controlled actuators
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : With compensating features : Secto-scanning systems)

Patent 5550450: Dead-time effect compensation for pulse-width modulated inverters and converters
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Primary circuit control : Responsive to motor condition : Responsive to speed or rotation phase angle : With controlled power conversion : With plural capacitors)

Patent 5550451: Microcomputer with built-in motor control circuit
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Primary circuit control : Frequency control : With voltage pulse time control : Pluse width modulation or chopping : Including inverter)

Patent 5550452: Induction charging apparatus
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : CELL OR BATTERY CHARGER STRUCTURE : Charger inductively coupled to cell or battery : Employing "jumper" cable)

Patent 5550453: Battery charging method and apparatus
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL CHARGING : With peak detection of current or voltage (e.g., delta-V or delta-I utilized, etc.) : Hysteresis type (e.g., antichattering, etc.))

Patent 5550454: Charging regime for secondary lithium batteries
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL CHARGING : Multi-rate charging (e.g., plural charge rates before a maintenance charge, etc.) : Detection of current or voltage amplitude)

Patent 5550455: Standby generator pulse excitation system and electric power generating system for use therein
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANS : Plural conditions : Including an electrical condition :)

Patent 5550456: Voltage/current controlled voltage regulator to eliminate exciter field saturation
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANS : Plural conditions : Including an electrical condition : Plural electrical conditions : Voltage and current :)

Patent 5550457: Electric power generating device for vehicles
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANS : Speed or frequency of generator : Including an electrical condition)

Patent 5550458: Low-loss snubber for a power factor corrected boost converter
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : IN SHUNT WITH SOURCE OR LOAD : Using choke and switch across source : In bridge)

Patent 5550459: Tap position determination based on regular impedance characteristics
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using a transformer or inductor as the final control device : Having a variable length winding (e.g., tapped) as the final control device : With electronic tube or a three or more terminal semiconductive device in control circuit)

Patent 5550460: Voltage regulator control system with multiple control programs
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using a transformer or inductor as the final control device : Having a variable length winding (e.g., tapped) as the final control device : With electronic tube or a three or more terminal semiconductive device in control circuit)

Patent 5550461: System for operating a plurality of power supply modules in parallel
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using a three or more terminal semiconductive device as the final control device : Including plural final control devices : Linearly acting parallel connected : Including an electronic tube or a three or more terminal semiconductive device in control circuit)

Patent 5550462: Regulated power supply circuit and an emitter follower output current limiting circuit
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using a three or more terminal semiconductive device as the final control device : Linearly acting : With plural condition sensing : For protective system : With current sensor :)

Patent 5550463: Power supply connected in parallel with solid state switch for phase control of average power to a load
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : INPUT LEVEL RESPONSIVE : Phase controlled switching using electronic tube or a three or more terminal semiconductive device : Variable resistor)

Patent 5550464: Current switch with built-in current source
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : SELF-REGULATING (E.G., NONRETROACTIVE) : Using a three or more terminal semiconductive device as the final control device : For current stabilization : Including parallel paths (e.g., current mirror) : With additional stage)

Patent 5550465: Driving apparatus for cross-coil type analog indicating instrument
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Plural active motor elements (e.g., for two crossed pointers) : Ratio)

Patent 5550466: Hinged conduit for routing cables in an electronic circuit tester
(ELECTRICITY: MEASURING AND TESTING : MISCELLANEOUS : Combined)

Patent 5550467: Sensor including a follower for engaging the rotating portion of a bearing and having a sliding layer applied to the housing and encoder
(ELECTRICITY: MEASURING AND TESTING : ELECTRICAL SPEED MEASURING : Including speed-related frequency generator : Including magnetic detector : With extent-of-travel indicator)

Patent 5550468: Method and apparatus for adjusting the operating diameter of a probe in a rotating testing head
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : With compensation for test variable : Sensor supported, positioned, or moved within pipe)

Patent 5550469: Hall-effect device driver with temperature-dependent sensitivity compensation
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetometers : Hall plate magnetometers : Plural sensors)

Patent 5550471: Antenna cable for a diagnostic magnetic resonance apparatus
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Including a test sample and control sample)

Patent 5550472: Combined radio frequency coil with integral magnetic field shim set
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Polarizing field magnet : With homogeneity control :)

Patent 5550473: Method for locating thin bed hydrocarbon reserves utilizing electrical anisotropy
(ELECTRICITY: MEASURING AND TESTING : OF GEOPHYSICAL SURFACE OR SUBSURFACE IN SITU : With radiant energy or nonconductive-type transmitter : With separate pickup : Within a borehole :)

Patent 5550474: Battery electrolyte-level and electrolyte-stratification sensing system
(ELECTRICITY: MEASURING AND TESTING : ELECTROLYTE PROPERTIES : Using a battery testing device : To determine battery electrolyte condition : Including an integrating device)

Patent 5550475: Programmable battery charge indicator
(ELECTRICITY: MEASURING AND TESTING : ELECTROLYTE PROPERTIES : Using a battery testing device : To compare battery voltage with a reference voltage : Including an integrating device)

Patent 5550476: Fault sensor device with radio transceiver
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : For fault location : By voltage or current measuring : Using a particular sensing electrode)

Patent 5550477: Methods and apparatus for testing armature coils and coil lead connections using resistance measurements
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Armature or rotor : For insulation fault)

Patent 5550478: Housing for flexible fuel sensor
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using inductive type measurement : With a bridge circuit)

Patent 5550479: Signal measuring apparatus and signal measuring method
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Probe alignment or positioning : Of reflected test signal)

Patent 5550480: Method and means for controlling movement of a chuck in a test apparatus
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Using electro-optic device)

Patent 5550481: Circuit board test fixture apparatus with cam rotably mounted in slidable cam block and method for making
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Using electro-optic device)

Patent 5550482: Probe device
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Probe alignment or positioning : Of reflected test signal)

Patent 5550483: High speed test probe positioning system
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Probe alignment or positioning : Of reflected test signal)

Patent 5550484: Apparatus and method for inspecting thin film transistor
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Test of semiconductor device : With barrier layer : Field effect transistor : Differential bridge circuit)

Patent 5550485: Multifunction alternator testing device
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Motor or generator fault tests : With barrier layer)

Patent 5550486: Circuit and method for providing a known logic state at insufficient supply voltage
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : RELIABILITY : Fail-safe : With field effect-transistor)

Patent 5550487: Apparatus and method for allowing a synamic logic gate to operate statically
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Signal level or switching threshold stabilization : Bias or power supply level stabilization : With clocking)

Patent 5550488: Self timed driver
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : TRI-STATE (I.E., HIGH IMPEDANCE AS THIRD STATE) : With field effect-transistor : Complementary FET`s : Complementary FET`s)

Patent 5550489: Secondary clock source for low power, fast response clocking
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : CLOCKING OR SYNCHRONIZING OF LOGIC STAGES OR GATES : Current driving (e.g., fan in/out, off chip driving, etc.))

Patent 5550490: Single-rail self-resetting logic circuitry
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : CLOCKING OR SYNCHRONIZING OF LOGIC STAGES OR GATES : Field-effect transistor : MOSFET : MOSFET)

Patent 5550491: Current-mode logic circuit
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : FUNCTION OF AND, OR, NAND, NOR, OR NOT : Field-effect transistor (e.g., JFET, etc.) : Source-coupled logic (e.g., current mode logic (CML), differential current switch logic (DCSL), etc.) : CMOS)

Patent 5550492: Analog to digital converter using complementary differential emitter pairs
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By amplitude : Comparison between plural varying inputs : Differential input : With reference signal)

Patent 5550493: Potential comparing circuit having an offset correcting circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By amplitude : Comparison between plural varying inputs : Differential input : Current mirror : Cross-coupled)

Patent 5550494: Voltage selecting device for receiving a plurality of inputs and selectively outputting one thereof
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By amplitude : Comparison between plural varying inputs : With plural paths : Having feedback)

Patent 5550495: All MOS voltage to current converter
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Converting input voltage to output current or vice versa : With logic or bistable circuit)

Patent 5550496: High speed I/O circuit having a small voltage swing and low power dissipation for high I/O count applications
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Current driver : Having digital device (e.g., logic gate, flip-flop, etc.))

Patent 5550497: Power driver circuit with reduced turnoff time
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Current driver : Having inductive load (e.g., coil, etc.) : Sample and hold)

Patent 5550498: Method and apparatus for charge pulse-width modulation control
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Rectangular (e.g., clock, etc.) or pulse waveform width control : Duty cycle control : By phase)

Patent 5550499: Single delay line adjustable duty cycle clock generator
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Rectangular (e.g., clock, etc.) or pulse waveform width control : Duty cycle control : By phase)

Patent 5550500: Timing delay modulation scheme for integrated circuits
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Having specific delay in producing output waveform : Producing AC power control)

Patent 5550501: Current buffer circuit with enhanced response speed to input signal
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : GATING (I.E., SWITCHING INPUT TO OUTPUT) : Accelerating switching : Layout)

Patent 5550502: Control circuit and method for thin film head writed river
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : GATING (I.E., SWITCHING INPUT TO OUTPUT) : Utilizing three or more electrode solid-state device : Bridge circuit : Avalanche)

Patent 5550503: Circuits and method for reducing voltage error when charging and discharging a capacitor through a transmission gate
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : GATING (I.E., SWITCHING INPUT TO OUTPUT) : Utilizing three or more electrode solid-state device : Field-effect transistor : Insulated gate FET (e.g., MOSFET, etc.) : Complementary metal-oxide semiconductor (CMOS) : Using diode)

Patent 5550504: Dram using word line potential control circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM : With specific source of supply or bias voltage : Having particular substrate biasing : Having stabilized bias or power supply level : With field-effect transistor : With emitter follower)

Patent 5550505: Frequency shift keying (FSK) demodulator for use in low signal-to-noise ratio environments
(DEMODULATORS : FREQUENCY SHIFT KEYING OR MINIMUM SHIFT KEYING DEMODULATOR :)

Patent 5550506: DQPSK demodulator capable of improving a symbol error rate without decreasing a transmission rate
(DEMODULATORS : PHASE SHIFT KEYING OR QUADRATURE AMPLITUDE DEMODULATOR : Including logic element (e.g., logic gate or flip-flop)

Patent 5550507: Demodulator employing cyclic switching of the gain factor of an operational amplifier between different predetermined values
(DEMODULATORS : AMPLITUDE MODULATION DEMODULATOR : Input signal combined with local oscillator or carrier frequency signal (e.g., synchronous demodulator) : Including sampling, gating, or switching : Including LC resonant circuits tuned above and below input signal carrier frequency)

Patent 5550508: Phase inverter selection apparatus for tone alteration in a tube-type audio amplifier
(AMPLIFIERS : HAVING LIGHT-CONTROLLED OR ACTIVATED DEVICE (I.E., NOT LIGHT SIGNAL) : Artificial line)

Patent 5550509: Output power selection apparatus for a tube-type audio amplifier
(AMPLIFIERS : WITH CONTROL OF POWER SUPPLY OR BIAS VOLTAGE : Redundant amplifier circuits)

Patent 5550510: Constant transconductance CMOS amplifier input stage with rail-to-rail input common mode voltage range
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having field effect transistor :)

Patent 5550511: Differential amplifier having single phase input and two output phases
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having field effect transistor :)

Patent 5550512: Method for offset voltage trim for automatic gain controls
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having gain control means :)

Patent 5550513: High frequency, differential limiting distributed amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including distributed parameter-type coupling : Having particular biasing means)

Patent 5550514: Digital controlled xtal osc
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : AFC with logic elements : Reactance device (e.g., variable capacitors, saturable inductors, reactance tubes, etc.))

Patent 5550515: Multiphase clock synthesizer having a plurality of phase shifted inputs to a plurality of phase comparators in a phase locked loop
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : Plural A.F.S. for a single oscillator : Plural comparators or discriminators :)

Patent 5550516: Integrated resonant microbeam sensor and transistor oscillator
(OSCILLATORS : WITH DEVICE RESPONSIVE TO EXTERNAL PHYSICAL CONDITION : Plural outputs of diverse wave form)

Patent 5550517: Oscillation circuit having hysteresis inverter coupled to a delay circuit
(OSCILLATORS : SOLID STATE ACTIVE ELEMENT OSCILLATOR : Transistors : Relaxation oscillator : Inductor controlled AFC)

Patent 5550518: Miniature active conversion between microstrip and coplanar wave guide
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : With impedance matching : Having long line elements : Having plural concentric helices)

Patent 5550519: Dielectric resonator having a frequency tuning element extending into the resonator hole
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Coaxial : Tunable : Monolithic structure)

Patent 5550520: Monolithic HBT active tuneable band-pass filter
(WAVE TRANSMISSION LINES AND NETWORKS : NEGATIVE RESISTANCE OR REACTANCE NETWORKS OF THE ACTIVE TYPE : Capacity coupling)

Patent 5550521: Electrical ground connection between a coaxial connector and a microwave circuit bottom plate
(WAVE TRANSMISSION LINES AND NETWORKS : LONG LINE ELEMENTS AND COMPONENTS : Connectors and interconnections : Switch)

Patent 5550522: Deflection unit having a ring with field correction elements, and cathode ray tube provided with said unit
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Electron or ion beam deflecting type : With coil structure : Convertible from normally open to normally closed and vice versa)

Patent 5550523: Inductor
(INDUCTOR DEVICES : COIL AND CORE : Overlapping laminations (e.g., "Break Joint"))

Patent 5550524: Thermostat range limit device
(ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES : WITH DIVERSE ART-TYPE DEVICE :)

Patent 5550525: Switch with bimetallic element
(ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES : THERMALLY ACTUATED SWITCHES : With bimetallic element : Bimetallic element unitary with or directly actuates contacts : Multiple contacts or external circuit control means : With bimetallic element comprising or unitary with latch)

Patent 5550526: Thermal detection elements with heater
(ELECTRICAL RESISTORS : RESISTANCE VALUE RESPONSIVE TO A CONDITION : Current and/or voltage (e.g., ballast resistor) : Thermistor type :)

Patent 5550527: Resistor device for controlling a rotational speed of a motor
(ELECTRICAL RESISTORS : MOUNTED ON WHEELS OR VEHICLE : Force-actuated)

Patent 5550528: Matching of digital patterns using analog logic
(COMMUNICATIONS: ELECTRICAL : DIGITAL COMPARATOR SYSTEMS : Electromagnetically actuated mechanical signal)

Patent 5550529: Access control system
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Intelligence comparison for controlling : Authorization control (e.g., entry into an area) : Coded record input (e.g., IC card or key) : Rotary input)

Patent 5550530: Device for supplying power to and monitoring an electric fence
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Intrusion detection : Disturbance of electric field : Capacitance : Fence : Laser)

Patent 5550531: Motorized boat-mounted signaling device for water skiers
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Human or animal : Water safety alarm : Specified device housing or attachment means)

Patent 5550532: Method and device for containing fuel spills and leaks
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Fluent material : Wetness : Bridge circuit)

Patent 5550533: High bandwidth self-timed data clocking scheme for memory bus implementation
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Synchronizing : Control then monitoring)

Patent 5550534: Computerized magnetic key programmer
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Intelligence comparison for controlling : Authorization control (e.g., entry into an area) : Coded record input (e.g., IC card or key) : Magnetic coded record : Including timing means (e.g., clock))

Patent 5550535: Bank balance notification by wristwatch pager
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Having indication or alarm (e.g., location indication) : Code responsive (i.e., paging) : Message presentation : Display : News information provider (e.g., sports, weather, etc.))

Patent 5550536: Circuit frequency following technique transponder resonant
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Interrogation response : Interrogation signal detail : Housing detail)

Patent 5550537: Apparatus and method for measuring mass flow rate of a moving medium
(COMMUNICATIONS: ELECTRICAL : CONTINUOUSLY VARIABLE INDICATING (E.G., TELEMETERING) : Including particular sensor)

Patent 5550538: Navigation system
(COMMUNICATIONS: ELECTRICAL : VEHICLE POSITION INDICATION : Map display : Route determination and display on map : Intersection turn guidance : Off course, route re-search : Extension of time)

Patent 5550539: Joy stick type operating lever device
(CODED DATA GENERATION OR CONVERSION : BODILY ACTUATED CODE GENERATOR : Actuated by physical projection)

Patent 5550540: Distributed coding and prediction by use of contexts
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Adaptive coding : Pressure sensitive actuation)

Patent 5550541: Compact source coding tables for encoder/decoder system
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Adaptive coding : Pressure sensitive actuation)

Patent 5550542: Variable length code look-up table having separate code length determination
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : To or from variable length codes : To or from Morse code)

Patent 5550543: Frame erasure or packet loss compensation method
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : With error detection or correction : To or from Hollerith code)

Patent 5550544: Signal converter, noise shaper, AD converter and DA converter
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Using ladder network)

Patent 5550545: Electronic circuit having a linearised and symmetrized response, an oscillator having such a circuit, and a telecontrol transmitter having
(CODED DATA GENERATION OR CONVERSION : CODE GENERATOR OR TRANSMITTER : Transmitter for remote control signal : Using charge transfer devices (e.g., charge coupled devices, charge transfer by switched capacitances))

Patent 5550546: Advanced parameter encoder with dual integrated pulse present detection and channel/sector arbitration
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR EW (ELECTRONIC WARFARE) : Chaff)

Patent 5550547: Multiple item radio frequency tag identification protocol
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Secondary Surveilance Radar (SSR) or Air Traffic Control Radar Beacon System (ATCRBS))

Patent 5550548: Interrogator for detecting adjacent transponders
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Secondary Surveilance Radar (SSR) or Air Traffic Control Radar Beacon System (ATCRBS))

Patent 5550549: Transponder system and method
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Navigational : Distance measuring equipment (DME) : By varying gain or blocking receiver)

Patent 5550550: High efficiency satellite multibeam equally loaded transmitters
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including a satellite : Having a signal repeater : Cursor)

Patent 5550551: Position monitoring system and method
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Position indicating (e.g., triangulation) : Land vehicle location (e.g., bus, police car : Having traffic control)

Patent 5550552: Radiation shield
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With radio cabinet :)

Patent 5550553: Dielectric rod antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Wave guide type (e.g., horn) : Dielectric type (e.g., polystyrene rod) : With main and subreflector (Casse-grain type))

Patent 5550554: Antenna apparatus
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Fractional, multiple, or full wave length linear type : Non-uniformity in antenna : Collinear arrangement)

Patent 5550555: Structures subject to loading
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With support for antenna, reflector or director : Sectional)

Patent 5550556: Transmitting data and commands to display monitors
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DATA RESPONSIVE CRT DISPLAY CONTROL : Data responsive deflection control : X and Y axis deflection control : Controller automatically senses monitor resolution)

Patent 5550557: Symmetric drive for an electroluminscent display panel
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Display elements arranged in matrix (e.g., rows and columns) : Electroluminescent : Field emissive (e.g., FED, Spindt, microtip, etc.))

Patent 5550558: Display matrix
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Display elements arranged in matrix (e.g., rows and columns) : Plural mechanically movable display elements : With a permanent magnet placed on movable display elements : Input/output liquid crystal display panel)

Patent 5550559: Method and apparatus for locating a point in a list
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graphic manipulation (object processing or display attributes) : Translation : Image based (addressing) : Scrolling : Weights vary across image (e.g., transition from foreground to background))

Patent 5550560: Image displaying apparatus
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Animation)

Patent 5550561: Display cursor controlling device for reading card information from an information bearing credit or debit card
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Cursor mark position control device : Mouse : Scaling)

Patent 5550562: Data processing device that enables mouse-operated application programs to be operated from an operation pad, and an operation pad for use with
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Cursor mark position control device : Mouse : Scaling)

Patent 5550563: Interaction framework system
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Including keyboard : Trackball)

Patent 5550564: Self cleaning touch screen display mechanism
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Touch panel : Having programmable function key)

Patent 5550565: Image transformation apparatus
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM : Addressing : Address manipulation : Address translation (e.g., between virtual and physical addresses) : Photosensor encoder)

Patent 5550566: Video capture expansion card
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM : For storing compressed data : Character memory)

Patent 5550567: Data input/output device for displaying information, and method for employing such a device
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM : First in first out (i.e., FIFO) : Character memory)

Patent 5550568: Ink jet recording with time-division driving
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Of ejector : Array : Plural pulses)

Patent 5550569: Image processing for ink-jet printing with fast-and slow-drying inks
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Of ejector : Creating plural tones : Full-line array)

Patent 5550570: Ink jet cartridge mounting device and method
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Modular : Nozzles)

Patent 5550571: Method of and apparatus for thermally recording images
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Photo scanning : Beam generator driving means : Having feedback or environmental control : Modified or specific fluid (e.g., heated, dehumidified, specified gas))

Patent 5550572: Color video printer for double side printing
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : By electrochemical)

Patent 5550573: Image forming apparatus using a photosensitive drum and having light quantity adjustment
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Feedback of light for intensity control : Housing or mounting)

Patent 5550574: Method and apparatus for exposing light sensitive material by means of a copying machine having a vertically movable laser unit
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : With record receiver or handling means therefor : Having deflector)

Patent 5550575: Viewer discretion television program control system
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : ACCESS CONTROL OR BLOCKING : Of specific program (e.g., based on program rating) : Combined with detecting VCR operation)

Patent 5550576: Method and apparatus for merging television program schedule information received from multiple television schedule information sources
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : OPERATOR INTERFACE : To facilitate tuning or selection of video signal : Electronic program guide : Content arrangement : Based on personal preference, profile, or viewing history (e.g., to produce redacted listing) :)

Patent 5550577: Video on demand network, including a central video server and distributed video servers with random access read/write memories
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : USER-REQUESTED VIDEO PROGRAM SYSTEM : Video-on-demand : Server or headend : Mass storage : Combined at local receiver)

Patent 5550578: Interactive and conventional television information system
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : VIDEO DISTRIBUTION SYSTEM WITH UPSTREAM COMMUNICATION : Transmission network : Having significant intermediate network unit (e.g., hub, substation, etc.) : With two-way connection from unit to receiver (e.g., for the purpose of channel selection) : Scheduling (e.g., grouping users together))

Patent 5550579: Two-way cable tv conversion system
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : VIDEO DISTRIBUTION SYSTEM WITH UPSTREAM COMMUNICATION : Transmission network : Return path : Wireless return path : Scheduling (e.g., grouping users together))

Patent 5550580: Low bit rate audio-visual communication system having integrated perceptual speech and video coding
(TELEVISION : TWO-WAY VIDEO AND VOICE COMMUNICATION (E.G., VIDEOPHONE) : Conferencing (e.g., loop) : Motion image conferencing :)

Patent 5550581: Low bit rate audio-visual communication system having integrated perceptual speech and video coding
(TELEVISION : TWO-WAY VIDEO AND VOICE COMMUNICATION (E.G., VIDEOPHONE) : Transmission control (e.g., resolution or quality) : Motion image conferencing)

Patent 5550582: Endoscope-image processing apparatus for performing image processing of emphasis in endoscope image by pigment concentration distribution
(TELEVISION : SPECIAL APPLICATIONS : With endoscope : Image magnifying)

Patent 5550583: Inspection apparatus and method
(TELEVISION : SPECIAL APPLICATIONS : Flaw detector : Of electronic circuit chip or board : Farm vehicle)

Patent 5550584: Bus-line network communication system
(TELEVISION : SPECIAL APPLICATIONS : Observation of or from a specific location (e.g., surveillance) : Intrusion detection : Using plural cameras : With modification of scanner sweep)

Patent 5550585: Video inter-view system
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Moving reflector)

Patent 5550586: Video camera and image input device connected through signal line for transferring multiplex data, and image input system using them
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : Exposure control)

Patent 5550587: White balance adjustment device for a still-video camera having an electronic flash
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : Color balance (e.g., white balance) : Video teleconferencing (including access or authorization))

Patent 5550588: Data input device and data input method for inputting image data from camera to memory
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : With details of static memory for output image (e.g., for a still camera) : Readout of solid-state image sensor considered or altered)

Patent 5550589: Method of adaptively multiplexing a plurality of video channel data using channel data assignment information obtained from a look-up table
(TELEVISION : BANDWIDTH REDUCTION SYSTEM : Plural video programs in single channel : Color television : Periodic shuttering)

Patent 5550590: Bit rate controller for multiplexer of encoded video
(TELEVISION : BANDWIDTH REDUCTION SYSTEM : Plural video programs in single channel : Color television : Periodic shuttering)

Patent 5550591: Motion compensator for digital image restoration
(PULSE OR DIGITAL COMMUNICATIONS : BANDWIDTH REDUCTION OR EXPANSION : Television or motion video signal : Predictive : Plural : Subband coding)

Patent 5550592: Film mode progressive scan conversion
(TELEVISION : FORMAT CONVERSION : Line doublers type (e.g., interlace to progressive IDTV type) : Specified chrominance signal)

Patent 5550593: Multiplex communication system using separated and multiplexed data
(TELEVISION : NONPICTORIAL DATA PACKET IN TELEVISION FORMAT : Data separation or detection : Frequency change of subcarrier)

Patent 5550594: Apparatus and method for synchronizing asynchronous signals
(TELEVISION : SYNCHRONIZATION : Locking of video or audio to reference timebase : Frame or field synchronizers : With line rate switch (e.g., PAL))

Patent 5550595: Apparatus and method for motion estimation with enhanced camera interface
(TELEVISION : COMBINED WITH DIVERSE ART DEVICE (E.G., COMPUTER, TELEPHONE) : Of mechanical scan)

Patent 5550596: Digital television signal processing system including a co-channel rejection filter
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Noise or undesired signal reduction : Specified color (e.g., saturation and contrast control))

Patent 5550597: Signal processing method and signal processing device
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Color television signal processing : receiver type)

Patent 5550598: Convergence adjustment circuit and projection type display apparatus
(TELEVISION : VIDEO DISPLAY : Cathode-ray tube : With distortion, alignment or focus : Color convergence correction : Folding)

Patent 5550599: Surface modified lens
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : Ophtahalmic lenses or blanks : Neck retainers)

Patent 5550600: Ophthalmic lens having a negative refractive power
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : Ophtahalmic lenses or blanks : Neck retainers)

Patent 5550601: Method and apparatus for ocular motility testing
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Including eye movement detection : Having means to detect proper distance or alignment (i.e., eye to instrument))

Patent 5550602: Apparatus and method for examining visual functions
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Subjective type : Including test chart or target : Illuminated : Having plural disc carrier)

Patent 5550603: Motion picture film with digital sound track
(OPTICS: MOTION PICTURES : WITH SOUND ACCOMPANIMENT : Common picture and sound record carrier systems : Flexible strip type : On picture and sound records)

Patent 5550604: Compact high resolution light valve projector
(OPTICS: IMAGE PROJECTORS : COMPOSITE PROJECTED IMAGE : Multicolor picture : Automatic)

Patent 5550605: Optical element rotating device for liquid-crystal
(OPTICS: IMAGE PROJECTORS : PRISM IN LIGHT PATH : Profile or silhouette)

Patent 5550606: Camera with magnetically movable light blocking shield
(PHOTOGRAPHY : VARIABLE FRAME MASKING : Having wide aspect ratio : Having release actuator on support)

 

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