Patents 5254842 - 5255100

 

 

Patent 5254842: System for preventing unauthorized operation of an automotive vehicle
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Intelligence comparison for controlling : Authorization control (e.g., entry into an area) : Coded record input (e.g., IC card or key) : Electronic coded record : Including timing means (e.g., clock))

Patent 5254843: Securing magnetically encoded data using timing variations in encoded data
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Magnetic : Raised or depressed portions on record)

Patent 5254844: Mirrorless scanners with movable laser, optical and sensor components
(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) : Using an imager (e.g., CCD or camera-type reader))

Patent 5254845: Automatic focusing system using focal length-changing element
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Automatic focus control : Of a microscope : With a collimator)

Patent 5254846: Analog photosensor operating on the power from a standard 4-20 ma instrumentation current loop
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Controlling light source intensity : Self-luminous target)

Patent 5254847: Contact-type image sensor assembly having supporting structure for maintaining predetermined distance between the lens and the original
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controlled circuit : Plural photosensitive image detecting element arrays : With comparison)

Patent 5254848: Image sensor and method of reading data out of the same having load capacitors being respectively continuously connected to common signal
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controlled circuit : Plural photosensitive image detecting element arrays : With comparison)

Patent 5254849: Image reading apparatus having light shielding element disposed between light emitting elements
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controlled circuit : Plural photosensitive image detecting element arrays : With comparison)

Patent 5254850: Method and apparatus for improving photoconductor signal output utilizing a geometrically modified shaped confinement region
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controlled circuit : Special photocell or electron tube circuits : Special photocell : Light amplifier type)

Patent 5254851: Wide-dynamic range light receiver
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controlled circuit : Special photocell or electron tube circuits : Amplifier type : With moving reticle in optical path)

Patent 5254852: Helmet-mounted night vision system and secondary imager
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controlled circuit : Special photocell or electron tube circuits : Amplifier type : Light amplifier type : Vacuum tube type :)

Patent 5254853: Optical sensing device
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Controlled by article, person, or animal : Volume or level)

Patent 5254854: Scanning microscope comprising force-sensing means and position-sensitive photodetector
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Means for moving optical system : Light chopper type)

Patent 5254855: Device for contactless detection of glass sheets in movement with isothermal light path environment
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Housings (in addition to cell casing) : Hoods, grating, baffles, diaphragms, masks)

Patent 5254856: Charged particle beam apparatus having particular electrostatic objective lens and vacuum pump systems
(RADIANT ENERGY : INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES : Electron probe type : Magnetic field path-bending means)

Patent 5254857: Fast scanning electron microscope (FSEM)
(RADIANT ENERGY : INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES : Electron probe type : Magnetic field path-bending means)

Patent 5254858: System having non-imaging concentrators for performing IR transmission spectroscopy
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : With selection of plural discrete wavelengths or bands : With radiation source : With adjustment of conditions)

Patent 5254859: Sawmill method and apparatus with edge scanning means
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring dimensions : Transversal measurement (e.g., width, diameter, cross-sectional area) : Lumber : With detector support)

Patent 5254860: Apparatus for guiding an optical character reader over an information containing card
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Including coded record : End illuminated light conductor with noncircular geometric cross section)

Patent 5254861: Biological aerosol particle detector and method having an electronic pulse detection means
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Fluent material in optical path : Digital information)

Patent 5254862: Diamond field-effect transistor with a particular boron distribution profile
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : SPECIFIED WIDE BAND GAP (1.5EV) SEMICONDUCTOR MATERIAL OTHER THAN GAASP OR GAALAS : Diamond or silicon carbide : In array having structure for use as imager or display, or with transparent electrode)

Patent 5254863: Semiconductor device such as a high electron mobility transistor
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HETEROJUNCTION DEVICE : Having graded composition : Having narrow energy band gap (<<1eV) layer (e.g., PbSnTe, HgCdTe, etc.))

Patent 5254864: Semiconductor device
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Junction field effect transistor (unipolar transistor) : Junction field effect transistor in integrated circuit : With bipolar device : With Schottky barrier gate)

Patent 5254865: Semiconductor integrated circuit device employing MOSFETS
(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 : With lightly doped portion of drain region adjacent channel (e.g., LDD structure) : All contacts on same surface (e.g., lateral structure))

Patent 5254866: LDD CMOS with wider oxide sidewall on PMOS than NMOS
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Insulated gate field effect transistor in integrated circuit : Complementary insulated gate field effect transistors : Including resistor element)

Patent 5254867: Semiconductor devices having an improved gate
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Gate insulator includes material (including air or vacuum) other than SiO 2 : Composite or layered gate insulator (e.g., mixture such as silicon oxynitride) : Plural gate insulator layers)

Patent 5254868: Solidstate image sensor device
(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 optical element : With thinned central active portion of semiconductor surrounded by thick insensitive portion (e.g. diaphragm type strain gauge))

Patent 5254869: Aluminum alloy/silicon chromium sandwich schottky diode
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : SCHOTTKY BARRIER : Specified materials : Guard ring)

Patent 5254870: Static random access memory having memory cells with electric field shielding for cell load resistances
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : WITH SHIELDING (E.G., ELECTRICAL OR MAGNETIC SHIELDING, OR FROM ELECTROMAGNETIC RADIATION OR CHARGED PARTICLES) : Stepped profile)

Patent 5254871: Very large scale integrated circuit package, integrated circuit carrier and resultant interconnection board
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : LEAD FRAME : On integrated circuit)

Patent 5254872: Semiconductor device and method of manufacturing 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 forms a diffusion barrier : Pin grid type)

Patent 5254873: Trench structure having a germanium silicate region
(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 forms a diffusion barrier : Pin grid type)

Patent 5254874: High density local interconnect in a semiconductor circuit using metal silicide
(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 : Pin grid type)

Patent 5254876: Combined solar and wind powered generator with spiral blades
(PRIME-MOVER DYNAMO PLANTS : FLUID-CURRENT MOTORS : Wind : Wind)

Patent 5254877: Distributed power supply system
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : PLURAL SUPPLY CIRCUITS OR SOURCES : Substitute or emergency source : Storage battery or accumulator : Serially connected sources)

Patent 5254878: Voltage regulated power supply providing a constant output voltage
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : PLURAL SUPPLY CIRCUITS OR SOURCES : Diverse or unlike electrical characteristics : Differing voltages : With intervening dynamoelectric machine)

Patent 5254879: Safety switch assembly
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Selectively actuated)

Patent 5254880: Large scale integrated circuit having low internal operating voltage
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM : With specific source of supply or bias voltage : Impact ionization)

Patent 5254881: Master-slave peak detector
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By amplitude : Maximum or minimum amplitude : With latching type element (e.g., flip-flop, etc.))

Patent 5254882: Method and device for processing two separately referenced signal levels
(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 : Hyperconductive diode)

Patent 5254883: Electrical current source circuitry for a bus
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Bus or line termination (e.g., clamping, impedance matching, etc.) : With field effect-transistor)

Patent 5254885: Bi-CMOS logic circuit with feedback
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : FUNCTION OF AND, OR, NAND, NOR, OR NOT : Bipolar and FET : Bi-CMOS : CMOS)

Patent 5254886: Clock distribution scheme for user-programmable logic array architecture
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : MULTIFUNCTIONAL OR PROGRAMMABLE (E.G., UNIVERSAL, ETC.) : Array (e.g., PLA, PAL, PLD, etc.) : Significant integrated structure, layout, or layout interconnections : With clocking)

Patent 5254887: ECL to BiCMIS level converter
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : INTERFACE (E.G., CURRENT DRIVE, LEVEL SHIFT, ETC.) : Logic level shifting (i.e., interface between devices of different logic families) : Bi-CMOS : ECL to/from CMOS :)

Patent 5254888: Switchable clock circuit for microprocessors to thereby save power
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Clock or pulse waveform generating : Single clock output with multiple inputs : Clock bus)

Patent 5254889: MOSFET analog multiplier
(ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING : ELECTRICAL ANALOG CALCULATING COMPUTER : Particular function performed : Multiplication : Amplifier with additional feedback loop)

Patent 5254890: Ground bouncing reducing circuit and method
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : GATING (I.E., SWITCHING INPUT TO OUTPUT) : Signal transmission integrity or spurious noise override : Switch noise signal : Temperature control)

Patent 5254891: BICMOS ECL circuit suitable for delay regulation
(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 : With bipolar transistor : MESFET (i.e., metal semiconductor field-effect transistor))

Patent 5254892: Stepper motor with integrated assembly
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Magnetic motors : Step-by-step : Successively energized solenoid coils)

Patent 5254893: Shaft support assembly for use in a polygon mirror drive motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Bearing or air-gap adjustment or bearing lubrication : Housings, windows or covers)

Patent 5254894: Dual-stator induction synchronous motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Plural rotary elements : Motor-generator sets)

Patent 5254895: Motor for disc drive
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Permanent magnet machines : Permanent magnet rotor : Combined with flux for sensing : Adjustable)

Patent 5254896: Alternating current generator rotor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Rotor structure : Interfitting or claw tooth rotors : End turn supports)

Patent 5254897: Activation circuit for battery-operated security alarm detection system
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Electrical systems : Electrical output circuit : Charging and discharging)

Patent 5254898: Vibrator
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Combined with resonant structure : Electrical output circuit)

Patent 5254899: Micro-traveller with ultrasonic motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Combined with resonant structure : Direct mechanical coupling : Motor producing continual motion : Traveling wave motor :)

Patent 5254900: Broad beam ultrasonic transducer
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : With mechanical energy coupling means : Acoustic wave type generator or receiver : Plural elements)

Patent 5254901: Neck extender for a reflector lamp
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH OPTICAL DEVICE OR SPECIAL RAY TRANSMISSIVE ENVELOPE : Reflector : With integrant display electrode)

Patent 5254902: Filament support for tubular lamp capsule
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD : For filament : Supports supported by opposed parts of envelope : Support structure supported by the envelope)

Patent 5254903: Cathode ray tube
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Ray generating or control : Including cathode assembly : With control grid adjacent cathode : With anode : With additional electrode : With coating or spiral electrode :)

Patent 5254904: Antireflective coating layer in particular for a cathode ray tube
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Envelope : Coating or shielding : Light conducting fiber or rod)

Patent 5254905: Cathode-luminescent panel lamp, and method
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : Vacuum-type tube : Phosphor on envelope wall)

Patent 5254906: Photomultiplier tube having a grid type of dynodes
(ELECTRIC LAMP AND DISCHARGE DEVICES : PHOTOSENSITIVE : Photomultiplier : Having plural dynodes : Venetian blind type : Nonplanar cathode)

Patent 5254907: Lighting system for use in vehicle cabin
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : SPECIAL APPLICATION : Vehicle : Shunt circuit closing)

Patent 5254908: Sign board lighting control system
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL LOAD DEVICE SYSTEMS : Automatic regulation)

Patent 5254909: Automatic luminosity cyclical modulation device for a lighting facility
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CURRENT AND/OR VOLTAGE REGULATION : Pre-selectable regulator systems : Variable inductance)

Patent 5254910: Color-differential type light display device
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL LOAD DEVICE SYSTEMS : Electric switch in the supply circuit : Variable impedance-type regulator)

Patent 5254911: Parallel filament electron gun
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : For flat cathode-ray tube : Intermediate stage at lower potential)

Patent 5254913: Speed limiting circuit for universal type series or compound electric motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : SERIES MOTORS : Field circuit control : Impedance in series with field windings and in parallel to armature winding)

Patent 5254914: Position detection for a brushless DC motor without Hall effect devices using a mutual inductance detection method
(ELECTRICITY: MOTIVE POWER SYSTEMS : SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS : Field circuit control)

Patent 5254915: Motor control device including an improved braking control arrangement
(ELECTRICITY: MOTIVE POWER SYSTEMS : BRAKING : Automatic and/or with time-delay means : Condition of motor or driven device : Speed, acceleration, movement or position of motor or driven device : With means for short-circuiting a winding)

Patent 5254916: Windshield wiper speed and delay control
(ELECTRICITY: MOTIVE POWER SYSTEMS : PERIODIC, REPETITIOUS OR SUCCESSIVE OPERATIONS CONTROL OF MOTOR, INCLUDING "JOG" AND "INCH" CONTROL : Different voltages)

Patent 5254917: Direct current motor driving device
(ELECTRICITY: MOTIVE POWER SYSTEMS : AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING) : Movement, position, or limit-of-travel : In excess of a predetermined valve)

Patent 5254918: Detection of position of rotor in brushless dc motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING) : Movement, position, or limit-of-travel : In excess of a predetermined valve)

Patent 5254919: Encoder system using linear array sensor for high resolution
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Power- or motion-transmitting mechanism)

Patent 5254920: Seek system for sector servo disk drive
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Power- or motion-transmitting mechanism)

Patent 5254921: Abnormality detecting method for a servo system
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Adaptive or optimizing systems including "bang-bang" servos : Mechanical gearing)

Patent 5254922: Rotational position detector for robot
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Program- or pattern-controlled systems : With program recording or composing means : Multifunction manipulator (i.e., Robot) : Differential type)

Patent 5254923: Industrial robot synchronous control method and apparatus
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Program- or pattern-controlled systems : With program recording or composing means : Multifunction manipulator (i.e., Robot) : Differential type)

Patent 5254924: Method and device for controlling motor in powered seat
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Multiple mode systems : Marine vehicles)

Patent 5254925: Permanent magnet control means
(ELECTRICITY: MOTIVE POWER SYSTEMS : OPEN-LOOP STEPPING MOTOR CONTROL SYSTEMS : Having commutating switch-type transmitter)

Patent 5254926: Current-mode hysteresis control for controlling a motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Primary circuit control : Responsive to motor condition : Operating from a single phase source)

Patent 5254927: Battery charger with appliance plug socket
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : CELL OR BATTERY CHARGER STRUCTURE : Vehicle battery charging)

Patent 5254928: Power management system for battery powered computers
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : DIVERSE CHARGING OR DISCHARGING RATES FOR PLURAL BATTERIES : With generator charging source)

Patent 5254929: Intermediate storage battery charging system
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : ONE CELL OR BATTERY CHARGES ANOTHER : With shuntless charging source control)

Patent 5254930: Fault detector for a plurality of batteries in battery backup systems
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : SERIALLY CONNECTED BATTERIES OR CELLS : With individual charging of plural batteries or cells : With charger stand or base)

Patent 5254931: Battery charging apparatus in a portable electronic apparatus
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : CELL OR BATTERY CHARGER STRUCTURE : For handheld device : With charger stand or base adapted to hold battery pack)

Patent 5254932: Charging voltage control circuit for battery chargers
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL CHARGING : Pulsed : Pulse modulation : Pulse-width modulation : With voltage compensation)

Patent 5254933: Battery charging device
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL CHARGING : With thermal condition detection : Thermal switch (e.g., thermostat, bimetallic switch, etc.) : Temperature compensation)

Patent 5254934: Method of and system for producing electrical power
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : NONMAGNETIC-TYPE GENERATOR :)

Patent 5254935: Monitoring circuit for a system for recharging a motor vehicle battery
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANS : Speed or frequency of generator : Including an electrical condition)

Patent 5254936: Dual generator electrical system
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : GENERATOR CONTROL : With armature or primary circuit control : Plural armature circuits or windings : Battery source)

Patent 5254937: Power supply control device having memory tables for providing a stabilized output
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using a three or more terminal semiconductive device as the final control device : Switched (e.g., switching regulators) : Digitally controlled : Including final control device parameter)

Patent 5254938: Resistor circuit with reduced temperature coefficient of resistance
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : INCLUDING AN IMPEDANCE : Thermistor or resistor : Resistor only)

Patent 5254939: Probe card system
(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 5254940: Testable embedded microprocessor and method of testing same
(ERROR DETECTION/CORRECTION AND FAULT DETECTION/RECOVERY : PULSE OR DATA ERROR HANDLING : Digital logic testing : Built-in testing circuit (BILBO) : Clock or synchronization)

Patent 5254941: Structure and method for determining isolation of integrated circuit
(ELECTRICITY: MEASURING AND TESTING : MISCELLANEOUS : Combined)

Patent 5254942: Single chip IC tester architecture
(ERROR DETECTION/CORRECTION AND FAULT DETECTION/RECOVERY : PULSE OR DATA ERROR HANDLING : Digital logic testing : Scan path testing (e.g., level sensitive scan design (LSSD)) : Boundary scan : Bus or I/O channel device fault)

Patent 5254943: Integrated circuit device with a test circuit for a main circuit
(ERROR DETECTION/CORRECTION AND FAULT DETECTION/RECOVERY : PULSE OR DATA ERROR HANDLING : Digital logic testing : Error mapping or logging)

Patent 5254944: Inspection probe for inspecting irregularly-shaped tubular members for anomalies
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetic sensor within material : Sensor supported, positioned, or moved within pipe : Magnetoresistive)

Patent 5254945: Magneto-resistive superconductive device and method for sensing magnetic fields
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetometers : Superconductive magnetometers : Plural sensors)

Patent 5254946: Magnetic head and disk tester with head centrally mounted on radially-moving, rotatable platform that surrounds disk
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetic test structure elements : With support for article)

Patent 5254947: Optical pumping, resonance magnetometer using a plurality of multiplexed beams
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using optical pumping or sensing device : To determine direction)

Patent 5254948: Method and apparatus for body motion corrective imaging
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using a nuclear resonance spectrometer system : To obtain localized resonance within a sample :)

Patent 5254949: Nuclear magnetic resonance imaging methods
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using a nuclear resonance spectrometer system : To obtain localized resonance within a sample :)

Patent 5254950: DC superconducting quantum interference device usable in nuclear quadrupole resonance and zero field nuclear magnetic spectrometers
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Electronic circuit elements : With homogeneity control)

Patent 5254951: Circuit for measuring discharging and charging current of a battery providing offset/drift voltage for correcting amplifier output
(ELECTRICITY: MEASURING AND TESTING : ELECTROLYTE PROPERTIES : Using a battery testing device : To evaluate contact response time)

Patent 5254952: Automatic battery and charging system tester with motor-driven carbon pile loading
(ELECTRICITY: MEASURING AND TESTING : ELECTROLYTE PROPERTIES : Using a battery testing device : To determine load/no-load voltage : Including an integrating device)

Patent 5254953: Identification of pin-open faults by capacitive coupling through the integrated circuit package
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Electrical connectors : With barrier layer)

Patent 5254954: Defect detecting apparatus and method for detecting a defect in an insulator using an electric discharge sense by an optical pickup
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Insulation : Transformer)

Patent 5254955: Advanced phase locked loop circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Synchronizing : With feedback : Phase lock loop : Phase lock loop)

Patent 5254956: Composite differential amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having common mode rejection circuit :)

Patent 5254957: Apparatus and method for amplifying optically sensed signals
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including atomic particle or radiant energy impinging on a semiconductor : And bandpass, broadband (e.g., wideband) or sidepass means)

Patent 5254958: Phase-lock-loop circuit and method for compensating, data bias in the same
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : Plural A.F.S. for a single oscillator : Plural controls)

Patent 5254959: Frequency synthesizer having phase control loop with plural branches
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : Plural A.F.S. for a single oscillator : Plural comparators or discriminators : With phase-shifted inputs :)

Patent 5254960: Oscillator circuit capable of removing noise
(OSCILLATORS : PLURAL OSCILLATORS : With particular signal combining means (e.g., cavity mixer))

Patent 5254961: Low-power crystal circuit
(OSCILLATORS : SOLID STATE ACTIVE ELEMENT OSCILLATOR : Transistors : Electromechanical resonator controlled : Field-effect transistor active element : Converter using silicon control rectifiers)

Patent 5254962: Combined acoustic wave device and ceramic block filter structure
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Electromechanical filter : Using surface acoustic waves : Plural coupled vibrators)

Patent 5254963: Microwave filter with a wide spurious-free band-stop response
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Waveguide : Tunable)

Patent 5254965: Protective reed switch housing
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : With housing or support means : Pivoted or relatively movable independently of the armature)

Patent 5254966: Spinning platform with crossed-pole magnets
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Magnet structure or material : Permanent magnets : Plural magnets : With outer casing or housing)

Patent 5254967: Dual element fuse
(ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES : ELECTROTHERMALLY ACTUATED SWITCHES : Fusible element actuated : Delayed action (i.e., time lag) : With biased direct circuit opening means : Plural elements)

Patent 5254968: Electrically conductive plastic speed control resistor for an automotive blower motor
(ELECTRICAL RESISTORS : MOUNTED ON WHEELS OR VEHICLE : Force-actuated)

Patent 5254969: Resistor combination and method
(ELECTRICAL RESISTORS : WITH BASE EXTENDING ALONG RESISTANCE ELEMENT : Resistance element coated on base : Element extends in or through openings or grooves in frame or support)

Patent 5254970: Programmable personal alarm
(COMMUNICATIONS: ELECTRICAL : SYSTEMS : Audible signals (e.g., bell rings softly first and then loudly) : With sounder signal cut-off)

Patent 5254971: Adaptive lamp monitor using capacitors and switches
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : Internal alarm or indicator responsive to a condition of the vehicle : Lamp or lamp circuit condition : Of service interval expiration)

Patent 5254972: Window sealing kit
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Intrusion detection : Door or window movement : Specified sensor : Programmable)

Patent 5254973: Security circuit and modular devices therefor
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Intrusion detection : Door or window movement : Specified sensor : Magnetic sensor :)

Patent 5254974: Deactivating device
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Article placement or removal (e.g., anti-theft) : Detectable device on protected article (e.g., "tag") : Deactivatable by means other than mere removal : Fence)

Patent 5254975: Compensation type heat sensor
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Thermal : Time-temperature relationship (e.g., overtemperature exceeds predetermined interval or time-temperature integral) : Rate of temperature change : Having means locking device to article)

Patent 5254976: Liquid leak detector apparatus and method
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Fluent material : Leakage : Bridge circuit)

Patent 5254977: Color display
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Attributes (surface detail or characteristic, display attributes) : Color or intensity : Color processing in perceptual color space :)

Patent 5254978: Reference color selection system
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Attributes (surface detail or characteristic, display attributes) : Color or intensity : Color bit data modification or conversion : Using look up table : Spatial)

Patent 5254979: Raster operations
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graphic manipulation (object processing or display attributes) : Merge or overlay : Image based : Weighted : Plural look up tables)

Patent 5254980: DMD display system controller
(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) : Light-controlling display elements : Color)

Patent 5254981: Electrophoretic display employing gray scale capability utilizing area modulation
(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) : Light-controlling display elements : Particle suspensions (e.g., electrophoretic) : Input/output liquid crystal display panel)

Patent 5254982: Error propagated image halftoning with time-varying phase shift
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY DRIVING CONTROL CIRCUITRY : Intensity or color driving control (e.g., gray scale) : Having common base or substrate)

Patent 5254983: Digitally synthesized gray scale for raster scan oscilloscope displays
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graph generating : Real-time waveform display : Image based (addressing))

Patent 5254984: VGA controller for displaying images having selective components from multiple image planes
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graphic manipulation (object processing or display attributes) : Merge or overlay : Image based : Augmented reality (real-time))

Patent 5254986: Nation-wide paging with local modes of operation
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Having indication or alarm (e.g., location indication) : Code responsive (i.e., paging) : Transmitting configuration : Multiple transmitters : Zoned : Using additional record or carrier code)

Patent 5254987: Output signal processing unit of a fluxgate sensor
(COMMUNICATIONS: ELECTRICAL : VEHICLE POSITION INDICATION : Rudder position indicator)

Patent 5254988: Data communication system with card mounting portion
(CODED DATA GENERATION OR CONVERSION : BODILY ACTUATED CODE GENERATOR : Including keyboard or keypad : Having optical waveguide)

Patent 5254989: Garbling the identification of a key of a non-coded keyboard, and circuit for performing the method
(CODED DATA GENERATION OR CONVERSION : BODILY ACTUATED CODE GENERATOR : Including keyboard or keypad : With particular key scanning feature : With rollover feature (i.e., antidoublestrike))

Patent 5254990: Method and apparatus for compression and decompression of data
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Adaptive coding : Pressure sensitive actuation)

Patent 5254991: Method and apparatus for decoding Huffman codes
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : To or from number of pulses : To or from Huffman codes : With rollover feature (i.e., antidoublestrike))

Patent 5254992: Low power electronic measuring system
(CODED DATA GENERATION OR CONVERSION : CONVERTER COMPENSATION : Temperature compensation : Digital signal to analog resolver or synchro signal)

Patent 5254993: Multiplying digital-to-analog converter
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : With particular solid state devices (e.g., Gunn effect device, Josephson device, drift transistor, using solid state active devices as impedances) with other at longer intervals) : Current mirror : With rollover feature (i.e., antidoublestrike))

Patent 5254994: Current source cell use in current segment type D and A converter
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Digital to analog conversion : Using weighted impedances : With rollover feature (i.e., antidoublestrike))

Patent 5254995: Analog to digital peak detector utilizing a synchronization signal
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Analog input compared with static reference : Parallel type :)

Patent 5254996: Charge monitoring system for a remote control system
(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 5254997: Retrodirective interrogation responsive system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Unique identity : With defruiting or degarbling)

Patent 5254998: Executive monitor for microwave landing system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : TESTING OR CALIBRATING OF RADAR SYSTEM : By monitoring : With delay)

Patent 5254999: Video signal processor for radar system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : WITH PARTICULAR CIRCUIT : Digital processing : With video quantizer : Cursor)

Patent 5255000: Transmission signal direction finding apparatus and method
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Beacon or receiver : Direction-finding receiver only : Having a phase detector : Including a goniometer)

Patent 5255001: Antenna system for portable radio apparatus
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With radio cabinet :)

Patent 5255002: Antenna for vehicle window
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With vehicle : Supported by vehicle body :)

Patent 5255003: Multiple-frequency microwave feed assembly
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With polarization filter or converter : With reflector)

Patent 5255004: Linear array dual polarization for roll compensation
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With coupling network or impedance in the leadin : With plural antennas : Including a screening reflector)

Patent 5255005: Dual layer resonant quadrifilar helix antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Spiral or helical type : Antenna on bracket)

Patent 5255006: Collapsible apparatus for forming a dish shaped surface
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Antenna components : Reflector or director : Collapsible, foldable or adjustable : Luneberg type)

Patent 5255007: Method and apparatus for recording a pattern of areas of modified optical properties on an optical record carrier
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Driving circuitry : Housing or mounting)

Patent 5255008: Electrophotographic printer using a continuous form recording sheet
(RECORDERS : COMBINED WITH RECORD RECEIVER SEVERER : Speed indicator or alarm)

Patent 5255009: Automatic maintenance system for drop aperture plate (optics protection)
(RECORDERS : COMBINED WITH OTHER NON-RECORDING DEVICES : Speed indicator or alarm)

Patent 5255010: Electronic circuit for supplying selected image signals to a thermal printer
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Driving circuitry : Including switching means)

Patent 5255011: Thermal printer drive control apparatus and method of controlling thermal print head
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Density control : By history of recording elements : Using pulse width modulation : Including sensor means)

Patent 5255012: Thermal transfer printer
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Housing or mounting : Including tensioning means)

Patent 5255013: Multiple address grey level LED printing with binary architectured printhead
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Tone marking : Including switching means)

Patent 5255014: Image forming apparatus having a high .gamma. photoreceptor
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Photo scanning : Beam generator driving means : Laminated head including charged particle generation layer)

Patent 5255015: Athermally compensated optical head for a laser scanner
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Specific optical structure : Having mounting or supporting means : Specific lens)

Patent 5255016: Ink jet printer recording head
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With piezoelectric force ejection : Layers, plates : Flow path)

Patent 5255017: Three dimensional nozzle orifice plates
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Discharge means : Nozzles : Movement)

Patent 5255018: Image forming apparatus
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With electric field ejection (applied to fluid) : Movement)

Patent 5255019: Ink near-end detecting device
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Of fluid (e.g., ink flow rate, viscosity, etc.) : Fluid content (e.g., moisture or solvent content, ink refilling, liquid level) :)

Patent 5255020: Printing assembly for franking, obliterating machine or the like
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Of spacing between fluid ejector and receiving medium : Fluid content (e.g., moisture or solvent content, ink refilling, liquid level))

Patent 5255021: Ink-jet printer having an ink jet print head end of life detection circuit
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Measuring and testing (e.g., diagnostics) : With particular cooling means)

Patent 5255022: Ink manifold having elastomer channel plate for ink jet printhead and process for making
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Fluid or fluid source handling means : Fluid supply system : With aerosol formation)

Patent 5255023: Apparatus and method for improved paper marking
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : With medium for receiving an image or feeding means therefor : Pre or post treatment : Block driving)

Patent 5255024: Eye drop alignment glasses
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : Combined : Neck retainers)

Patent 5255025: Measurement apparatus for indirect ophthalmoscopy
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Of abnormal muscular functioning)

Patent 5255026: Stereo eye fundus camera
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Including eye photography :)

Patent 5255027: Eye testing device
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Including projected target image : Using photodetector)

Patent 5255028: Apparatus and method for producing 3-dimensional images
(OPTICS: IMAGE PROJECTORS : STEREOSCOPIC : Stereoscopic)

Patent 5255029: Liquid crystal display for projection systems
(OPTICS: IMAGE PROJECTORS : MISCELLANEOUS : Slides gripped or hooked)

Patent 5255030: Camera
(PHOTOGRAPHY : SCANNING CAMERA : Eye photography)

Patent 5255031: Data-retainable photographic film cartridge
(PHOTOGRAPHY : WITH DATA RECORDING : Optical : Having transfer strip)

Patent 5255032: Compact camera with deployable flash unit
(PHOTOGRAPHY : WITH OBJECT ILLUMINATION FOR EXPOSURE : Having flash built into camera : Folding flash : And reflector or refractor)

Patent 5255033: Folding camera
(PHOTOGRAPHY : WITH OBJECT ILLUMINATION FOR EXPOSURE : Having flash built into camera : Folding flash : And reflector or refractor)

Patent 5255034: Camera having an automatic film loading mechanism
(PHOTOGRAPHY : WITH FILM DRIVE : Having significant electronic circuit detail : Rewind)

Patent 5255035: Focusing control apparatus for a camera
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Lens drive circuit or motor structure : Image correlation type)

Patent 5255037: Shutter blade opening and closing device
(PHOTOGRAPHY : CAMERA DETAIL : Shutter : Including diaphragm : Plural selectable apertures : Operating on rolled material)

Patent 5255038: Remote control apparatus of camera
(PHOTOGRAPHY : HAVING WIRELESS REMOTE CONTROL CIRCUIT : Camera release : And means to move film)

Patent 5255039: Film assemblage
(PHOTOGRAPHY : CAMERA DETAIL : Detachable or removable film holder unit : Film cassette or cartridge : Including film use indicator : Opposite movement)

Patent 5255040: Film cassette and leader
(WINDING, TENSIONING, OR GUIDING : UNWINDING AND REWINDING A MACHINE CONVERTIBLE INFORMATION CARRIER (E.G., MAGNETIC TAPE OR PHOTOGRAPHIC FILM) : Cartridge system (i.e., cartridge work station or cartridge) : Single coil cartridge (e.g., film magazine) : With means to facilitate unwinding : Separable or hinged sections)

Patent 5255041: Single-use camera with door for cartridge receiving chamber
(PHOTOGRAPHY : DISPOSABLE OR RECYCLABLE CAMERA : Object support)

Patent 5255042: Top-drop film feed system
(PHOTOGRAPHY : FLUID-TREATING APPARATUS : Having photographic medium feed : Plate or wafer-type photographic medium)

Patent 5255043: Apparatus for maintaining constant image magnification in a camera system
(PHOTOGRAPHY : HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE : Automatic change of focal length : Constant image size : Plural tanks)

Patent 5255044: Automatic exposure control apparatus with improved exposure value calculation for photographing a moving object
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having pursuit mode : With mechanical rangefinder)

Patent 5255045: Camera system having distance measuring apparatus
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having pursuit mode : With mechanical rangefinder)

Patent 5255046: Camera system
(PHOTOGRAPHY : HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE : Power zoom : Having position sensor : Focus position adjusted according to focal length)

Patent 5255047: Strobo controlling apparatus
(PHOTOGRAPHY : FLASH SYSTEM RESPONSIVE TO FOCAL LENGTH OR DISTANCE : Camera release)

Patent 5255048: Camera with exposure-controlled pseudo-telephoto mode and method of operation
(PHOTOGRAPHY : PSEUDO ZOOM : Camera release)

Patent 5255049: Shutter control device for camera and control method therefor
(PHOTOGRAPHY : EXPOSURE CONTROL CIRCUIT : Look-up table memory : More than two photometering areas)

Patent 5255050: Projection exposure method
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Step and repeat : Reflector between original and photo-sensitive paper)

Patent 5255051: Small field scanner
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Methods : Including vacuum, fluid or spring pressure)

Patent 5255052: Image control board
(PHOTOCOPYING : CONTACT PRINTING : Fluid pressure retention of carrier and receiver in exposure position : With plural webs of indeterminate length (e.g., motion picture film))

Patent 5255053: Image forming apparatus having a transfer drum, an image member cartridge and exposure means
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Optics : Drum mount)

Patent 5255054: Method and apparatus for converting a conventional copier into an electronic printer
(ELECTROPHOTOGRAPHY : COMBINED WITH DIVERSE SUBJECT MATTER : With diverse image formation : Electrostatic : Light (e.g., laser, LED, LCD) : On or adjacent to platen :)

Patent 5255055: Reproduction apparatus having a plurality of non-imaging portion detectors
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Photoconductive member : Selection of image frame area : Simultaneously)

Patent 5255056: Photoconductor film clamping and tensioning system and method of use
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Photoconductive member : Renewable layer : Simultaneously)

Patent 5255057: Gray scale monocomponent nonmagnetic development system
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Dry development : Application member : Roller : Having applied bias : By magnetic brush)

Patent 5255058: Liquid developer imaging system using a spaced developing roller and a toner background removal surface
(ELECTROPHOTOGRAPHY : CLEANING OF IMAGING SURFACE : Removing liquid developer : Having treatment of image)

Patent 5255059: Image forming apparatus
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Dry development : Application member : Cartridge)

Patent 5255060: Fixing apparatus for electrographic recorder
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Fixing (e.g., fusing) : By heat and pressure : Heated roller : Pressure rollers : Vacuum or pneumatic)

Patent 5255061: Image forming apparatus with a first and second lid
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Paper path access : New and waste toner container)

Patent 5255062: Image forming apparatus having a removal means for separating developers
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Plural diverse (e.g., color) : Toner images overlapped : By diverting toner)

Patent 5255063: Color copying apparatus with improved start timing of a scanner
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Color : Registration : Having electrode)

Patent 5255064: Distance-measuring equipment
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : Triangulation ranging with photodetection, but with no projected beam : Using at least a pair of viewing axes : With at least one paired set of staring photodetectors)

Patent 5255065: Conically scanned holographic lidar telescope
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : With photodetection : Using at least a pair of viewing axes)

Patent 5255066: Measuring device for track building machines
(OPTICS: MEASURING AND TESTING : ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT : Apex of angle at observing or detecting station : With photodetection : With source beam moving to follow or align)

Patent 5255067: Substrate and apparatus for surface enhanced Raman spectroscopy
(OPTICS: MEASURING AND TESTING : BY DISPERSED LIGHT SPECTROSCOPY : With Raman type light scattering : With particular illumination means)

Patent 5255068: Fringe pattern analysis of a birefringent modified spectrum to determine environmental temperature
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Spectroscopy : Polarization : With diffraction grating means)

Patent 5255069: Electro-optical interferometric microdensitometer system
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Having wavefront division (by diffraction) : Having Schlieren effect)

Patent 5255070: Method for determining interface properties of semiconductor materials by photoreflectance
(OPTICS: MEASURING AND TESTING : BY SHADE OR COLOR : With color transmitting filter : Included with sample excitation : Including liquid filter comparison)

Patent 5255071: Photoreflectance method and apparatus utilizing acousto-optic modulation
(OPTICS: MEASURING AND TESTING : BY SHADE OR COLOR : With color transmitting filter : Included with sample excitation : Including liquid filter comparison)

Patent 5255072: Apparatus for analyzing fluid by multi-fluid modulation mode
(OPTICS: MEASURING AND TESTING : FOR LIGHT TRANSMISSION OR ABSORPTION : For flaws or imperfections)

Patent 5255073: Apparatus for emitting and receiving light
(OPTICS: MEASURING AND TESTING : FOR LIGHT TRANSMISSION OR ABSORPTION : Of fluent material : Gas : With plural detectors (e.g., simultaneous viewing))

Patent 5255074: Concentration measuring apparatus and calibration method
(OPTICS: MEASURING AND TESTING : OF LIGHT REFLECTION (E.G., GLASS) : Of photographic film)

Patent 5255075: Optical sensor
(OPTICS: MEASURING AND TESTING : OF LIGHT REFLECTION (E.G., GLASS) : Of photographic film)

Patent 5255076: Flesh correction circuit and method of flesh correction
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Hue control : Fleshtone corrector (e.g., fixed) : By phase change of chrominance signal or subcarrier : For color television)

Patent 5255077: White balance control based upon magnitude of flicker
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : Including flicker detection (e.g., fluorescent) : With means for preventing colored object from effecting color balance)

Patent 5255078: Impulse noise detector for a video signal receiver
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Noise or undesired signal reduction : Specified color (e.g., saturation and contrast control))

Patent 5255079: Apparatus for correcting a color tone of a video signal
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Transition or edge sharpeners : Color television processing : Including horizontal transition)

Patent 5255080: Contrast corrector for video signal
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Gray scale transformation : Nonlinear amplitude modification (e.g., gamma) : Color television : Selects or blends two or more separated signals to derive output)

Patent 5255081: Color television camera apparatus and method for producing an analog video signal for use with a plurality of video standard system
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : Details of luminance signal formation in color camera : Optical zoom)

Patent 5255082: Laser beam color image display apparatus
(TELEVISION : VIDEO DISPLAY : Projection device : Plural parallel light modulators : Liquid)

Patent 5255083: Digital color correction system and method
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Color photography previewer : With memory for storage of conversion data)

Patent 5255084: Image processing apparatus for determining rates of OCR for every colors by functions of respective color signals
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Color photography previewer : With memory for storage of conversion data)

Patent 5255085: Adaptive technique for providing accurate tone reproduction control in an imaging system
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Color photography previewer : With memory for storage of conversion data)

Patent 5255086: Method and apparatus for RF data transfer in a CATV system
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : VIDEO DISTRIBUTION SYSTEM WITH UPSTREAM COMMUNICATION : Receiver (e.g., set-top box) : Power signal over network)

Patent 5255087: Imaging apparatus and endoscope apparatus using the same
(TELEVISION : SPECIAL APPLICATIONS : With endoscope : Color TV : Color sequential illumination)

Patent 5255088: System and process for video monitoring a welding operation
(TELEVISION : SPECIAL APPLICATIONS : Manufacturing : Welding : Color sequential illumination)

Patent 5255089: Portable particle detector assembly
(TELEVISION : SPECIAL APPLICATIONS : Flaw detector : Of electronic circuit chip or board : Farm vehicle)

Patent 5255090: Progressive transmission of vector quantized data
(PULSE OR DIGITAL COMMUNICATIONS : BANDWIDTH REDUCTION OR EXPANSION : Television or motion video signal : Predictive : Separate coders)

Patent 5255091: Digital television standards conversion
(TELEVISION : FORMAT CONVERSION : Involving both line number and field rate conversion (e.g., PAL to NTSC) : Individual processing of different parts of image frequency band (e.g., sum and difference, high band/low band))

Patent 5255092: Pick-up and/or display device, and an imaging system comprising such a device
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : With details of static storage device : Accessing circuitry : Of color signal)

Patent 5255093: Apparatus and a method for limiting gain in a digital gamma corrector
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : Gray scale transformation (e.g., gamma correction) : Amplitude control (e.g., automatic gain control) : In charge coupled type sensor)

Patent 5255094: Muting circuit for eliminating transient signals generated due to power supply turn-on and turn-off
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Sound muting : Color television processing)

Patent 5255095: DC restore circuit in a video interface for medical imaging system
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : DC insertion : Level inserted during keying signals (e.g., keyed clamp) : Delayed AGC)

Patent 5255096: Video time code synchronized robot control apparatus
(TELEVISION : SPECIAL APPLICATIONS : Manufacturing : Position detection : Alignment or positioning : With alternating polarization)

Patent 5255097: Video system
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Switching : receiver type : Level derived within feedback path)

Patent 5255098: Process for the insertion of a supplementary video information set outside a main image
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Special effects : Combining plural sources : Multiple distinct images (e.g., splitscreen) : Including hue detection (e.g., chroma key))

Patent 5255099: Solid state pickup device with strap line in vertical register
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Solid-state image sensor : Charge-coupled architecture : Exclusively passive light responsive elements in the matrix)

Patent 5255100: Data formatter with orthogonal input/output and spatial reordering
(TELEVISION : FORMAT CONVERSION : Scan rate variation)

 

Back to EveryPatent.com