Patents 5256881 - 5257133

 

 

Patent 5256881: Mask and charged particle beam exposure method using the mask
(RADIANT ENERGY : IRRADIATION OF OBJECTS OR MATERIAL : Irradiation of semiconductor devices : Variable beam : Plural planar layer type)

Patent 5256882: Signal transmission circuit having a latch-up function
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Signal isolator : Controlling light source intensity)

Patent 5256883: Method and system for broad area field inspection of a moving web, particularly a printed web
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : With comparison to reference or standard : Determining range from detector)

Patent 5256884: Method and apparatus for the alignment of paper stacks in a printing press by optical beams reflected therefrom
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring position : With triangulation : With translucent material)

Patent 5256885: Doppler velocimeter having a diffraction grating and dual lens groups with identical focal distances
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring position : Measuring rate of motion or flow (change of position) : With translucent material)

Patent 5256886: Apparatus for optically detecting contamination in particles of low optical-loss material
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Fluent material in optical path : Scattered or reflected light : Tape, drum, or disc types)

Patent 5256887: Photovoltaic device including a boron doping profile in an i-type layer
(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) : Amorphous semiconductor material : Responsive to nonelectrical external signals (e.g., light) : Three or more electrode device)

Patent 5256888: Transistor device apparatus employing free-space electron emission from a diamond material surface
(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 5256889: Semiconductor rectifying diode with PN geometry
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : CONDUCTIVITY MODULATION DEVICE (E.G., UNIJUNCTION TRANSISTOR, DOUBLE-BASE DIODE, CONDUCTIVITY-MODULATED TRANSISTOR) : With particular signal path connections)

Patent 5256890: Non-interlacing charge coupled device of a frame interline transfer type
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Charge transfer device : Non-electrical input responsive (e.g., light responsive imager, input programmed by size of storage sites for use as a read-only memory, etc.) : 2-dimensional area architecture : Sensors not overlaid by electrode (e.g., photodiodes) : Si x Ge 1-x)

Patent 5256891: CCD electrode structure for image sensors
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Charge transfer device : Non-electrical input responsive (e.g., light responsive imager, input programmed by size of storage sites for use as a read-only memory, etc.) : 2-dimensional area architecture : Sensors not overlaid by electrode (e.g., photodiodes) : Si x Ge 1-x)

Patent 5256892: Semiconductor memory device wherein gate electrode thickness is greater in the memory cells than in the peripheral cells
(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 5256893: Semiconductor integrated circuit device with power MOSFET incorporated
(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 : Active channel region has a graded dopant concentration decreasing with distance from source region (e.g., double diffused device, DMOS transistor) : Gate electrode in groove)

Patent 5256894: Semiconductor device having variable impurity concentration polysilicon layer
(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 : With means to reduce parasitic capacitance : Gate electrode overlaps at least one of source or drain by no more than depth of source or drain (e.g., self-aligned gate) : Gate electrode consists of refractory or platinum group metal or silicide : As thin film structure (e.g., polysilicon resistor))

Patent 5256895: Pad oxide protect sealed interface isolation
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INTEGRATED CIRCUIT STRUCTURE WITH ELECTRICALLY ISOLATED COMPONENTS : Including high voltage or high power devices isolated from low voltage or low power devices in the same integrated circuit : Including dielectric isolation means : Connected across base-collector junction of transistor (e.g., Baker clamp))

Patent 5256896: Polysilicon-collector-on-insulator polysilicon-emitter bipolar transistor
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : BIPOLAR TRANSISTOR STRUCTURE : With means to increase inverse gain : With housing or contact (i.e., electrode) means)

Patent 5256897: Oxide superconducting device
(SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS : HIGH TEMPERATURE (TC GREATER THAN 30 K) DEVICES, SYSTEMS, APPARATUS, COM- PONENTS, OR STOCK, OR PROCESSES OF USING : Semiconductor thin film device or thin film electric solid-state device or system (i.e., active or passive) : Having optical waveguide)

Patent 5256898: Semiconductor device with a different epitaxial thickness between adjacent circuit regions
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : WITH SPECIFIED SHAPE OF PN JUNCTION : Channel stop layer)

Patent 5256899: Integrated circuit fuse link having an exothermic charge adjacent the fuse portion
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : CONTACTS OR LEADS INCLUDING FUSIBLE LINK MEANS OR NOISE SUPPRESSION MEANS : On integrated circuit)

Patent 5256900: Package for semiconductor device with at least one through hole
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : Of specified material other than copper (e.g., Kovar (T.M.)))

Patent 5256901: Ceramic package for memory semiconductor
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : With window means : Of insulating material)

Patent 5256902: Metal heatsink attach system
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : With provision for cooling the housing or its contents : With gas coolant : With fins : Pin grid type)

Patent 5256903: Plastic encapsulated semiconductor device
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : ENCAPSULATED : Configuration or pattern of bonds)

Patent 5256904: Collision determining circuit having a starting signal generating circuit
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : VEHICLE MOUNTED SYSTEMS : Automobile : Series-connected)

Patent 5256905: Method and circuit for sequentially connecting plural loads to an a.c. voltage without damaging the low voltage control circuitry therefor
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : PLURAL LOAD CIRCUIT SYSTEMS : Control of current or power : Constant magnitude control : By control of one or more load circuits : AC and DC)

Patent 5256906: Mechanism for switching from independent to synchronous, or vice versa the operational setting of a dust collector with a receptacle for
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : PLURAL LOAD CIRCUIT SYSTEMS : Selectively connected or controlled load circuits : Condition responsive : By control of one or more load circuits)

Patent 5256907: Electric power supply apparatus
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : PLURAL SUPPLY CIRCUITS OR SOURCES : Plural converters : Predetermined sequence)

Patent 5256908: Facility space data logging device
(COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES : ECHO SYSTEMS : Distance or direction finding : Receiver system)

Patent 5256909: Electronic, preferably zero-contact switch
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Selectively actuated)

Patent 5256910: Monitoring apparatus
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Electrical : Speed, centrifugal or kinetic force)

Patent 5256911: Neural network with multiplexed snyaptic processing
(DATA PROCESSING: ARTIFICIAL INTELLIGENCE : NEURAL NETWORK : Structure : Hybrid network (i.e., analog and digital) : Having digital weight :)

Patent 5256912: Synchronizer apparatus for system having at least two clock domains
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Synchronizing : Using multiple clocks : Responsive to power supply)

Patent 5256913: Low power optoelectronic device and method
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : EXTERNAL EFFECT : Light : With compensation for temperature fluctuations)

Patent 5256914: Short circuit protection circuit and method for output buffers
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Pulse shaping (e.g., squaring, etc.) : With field effect-transistor)

Patent 5256915: Compound semiconductor integrated circuit
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : INTERFACE (E.G., CURRENT DRIVE, LEVEL SHIFT, ETC.) : Current driving (e.g., fan in/out, off chip driving, etc.) : Field-effect transistor : Integrated Injection Logic (I2L))

Patent 5256916: TTL to CMOS translating input buffer circuit with dual thresholds for high dynamic current and low static current
(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 : TTL to/from CMOS :)

Patent 5256917: ECL logic gate with voltage protection
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Signal level or switching threshold stabilization : Bias or power supply level stabilization : With clocking)

Patent 5256918: Programmable logic circuit
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : MULTIFUNCTIONAL OR PROGRAMMABLE (E.G., UNIVERSAL, ETC.) : Having details of setting or programming of interconnections or logic functions : With field effect-transistor)

Patent 5256919: Method for preventing the oscillation of an RF power module
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Amplitude control : By limiting, clipping, or clamping : In input or output circuit : By feedback control)

Patent 5256920: Acoustic transducer
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Linear : Fixed and movable wound elements : Sphere or hemisphere)

Patent 5256921: Gear motor with rotary switch
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Electric circuit elements : Condition responsive (e.g., position, torque, etc.) : Distributor or timer (e.g., ignition magnetos))

Patent 5256922: Spindle motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Electric circuit elements : Connectors, terminals or lead-ins : Distributor or timer (e.g., ignition magnetos))

Patent 5256923: Switched reluctance motor with sensorless position detection
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : A.C. : Induction : D.C. excited)

Patent 5256924: Superconducting commutator for DC machines
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Current collectors : Rotary structure : Commutators : Field-distortion)

Patent 5256925: Brush holder with improved spring clip arrangement
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Current collectors : Fixed structure : Brush holders or rigging : Slidable brush : Axial spring : With an integral wedge)

Patent 5256926: Alternating-current generator with stator center lamination and method for producing the center lamination
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Stator structure : Frame and core type : Core assembly : With composition feature)

Patent 5256927: Surface acoustic wave element having a wide bandwidth and a low insertion loss
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Surface acoustic wave devices : Interdigitated electrodes :)

Patent 5256928: Ultrasonic motor with a vibrator having recesses
(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 : Specific material or composition : Pressing means detail)

Patent 5256929: Vibrator support structure
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Combined with damping structure : Sandwich or Langevin type)

Patent 5256930: Cooled plasma source
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH TEMPERATURE MODIFIER : Hollow electrode or lead : Plural electrode temperature modifying)

Patent 5256931: Electron source having a material-retaining device
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH POSITIVE OR NEGATIVE ION ACCELERATION : Plural apertured electrodes : Radiating type surface)

Patent 5256932: Color cathode ray tube
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Shadow mask, support or shield : Monoscope)

Patent 5256933: Electron gun for a cathode ray tube
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Plural beam generating or control : With focusing and accelerating electrodes : With studs)

Patent 5256934: Display tube comprising an electron gun with a resistive focusing lens
(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 5256935: Low pressure mercury vapor discharge lamp having cold cathode
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : With gaseous discharge medium : Phosphor on envelope wall : Electrode structure or material : Plural)

Patent 5256936: Image display device
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : Vacuum-type tube : Phosphor on envelope wall)

Patent 5256937: Flat panel fluorescent screen display tube
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : Vacuum-type tube : Phosphor on envelope wall)

Patent 5256938: ECR ion source with electron gun
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : DISCHARGE DEVICE LOAD WITH FLUENT MATERIAL SUPPLY TO THE DISCHARGE SPACE : Electron or ion source : With magnetic field)

Patent 5256939: Magnetic electronic fluorescent lamp ballast
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CONDENSER IN THE SUPPLY CIRCUIT : Inductance in the condenser circuit : Strobe lights)

Patent 5256940: High intensity discharge lamp device
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PULSATING OR A.C. SUPPLY : Induction-type discharge device load : Strobe lights)

Patent 5256941: Color display tube having a suspension means for a color selection electrode
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Shadow mask, support or shield : With resilient support : Integral or contiguous storage and display element)

Patent 5256942: Stabilization system for a freely rotatable platform
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : With particular "error-detecting" means : With inertial, direction or inclination measuring instrument : Stable platforms : Tachometer feedback)

Patent 5256943: Zero adjustment shaft encoder control for stepping motors
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : With particular motor control system responsive to the "actuating signal" : "Step-by-step" motors in closed-loop servos : Rotating amplifier (e.g., "Ward Leonard" control))

Patent 5256944: Motor speed control method and apparatus with drooping compensation independent of acceleration or deceleration current and time constant
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Primary circuit control : Responsive to motor condition : Responsive to speed or rotation phase angle : Phase splitting using stator winding mutual inductance or saturable winding)

Patent 5256945: Organic electroluminescence element
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : Solid-state type : With particular phosphor or electrode material : Organic phosphor : With shield or additional electrode)

Patent 5256946: Gaseous discharge lamp system with auxiliary lamp
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : AUTOMATIC SUBSTITUTION OF THE LOAD DEVICE OR ELECTRODE : With load device or electrode substitution)

Patent 5256947: Multiple filament enhanced ion source
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : DISCHARGE DEVICE LOAD WITH FLUENT MATERIAL SUPPLY TO THE DISCHARGE SPACE : Electron or ion source : With magnetic field)

Patent 5256948: Tri-color flasher for strings of dual polarity light emitting diodes
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL LOAD DEVICE SYSTEMS : Electric switch in the supply circuit : Variable impedance-type regulator)

Patent 5256949: AC power line current regeneration
(ELECTRICITY: MOTIVE POWER SYSTEMS : SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS : Field circuit control)

Patent 5256950: Windshield wiper assembly and synchronous signal generating device for windshield wiper
(ELECTRICITY: MOTIVE POWER SYSTEMS : PERIODIC, REPETITIOUS OR SUCCESSIVE OPERATIONS CONTROL OF MOTOR, INCLUDING "JOG" AND "INCH" CONTROL : Different voltages)

Patent 5256951: Numerical control apparatus having function for changing control parameters
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Program- or pattern-controlled systems : Multiple axes analog systems : Contouring systems)

Patent 5256952: Magnetic bearing control method and apparatus
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Unwanted harmonic or voltage component elimination quadrature rejection systems : Secto-scanning systems)

Patent 5256953: Electrical appliance with battery charging capability and connection means
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : CELL OR BATTERY CHARGER STRUCTURE : Having plug for A-C receptacle : Employing "jumper" cable)

Patent 5256954: Battery pack charging device
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : CELL OR BATTERY CHARGER STRUCTURE : For diverse sizes of cells, batteries, or battery packs : Employing "jumper" cable)

Patent 5256955: Household and onboard vehicle power outlet-based battery charger for portable telephone
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : CELL OR BATTERY CHARGER STRUCTURE : For diverse sizes of cells, batteries, or battery packs : Employing "jumper" cable)

Patent 5256956: Power supply apparatus for automotive vehicles
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL DISCHARGING : With charging : Bypassable battery cell)

Patent 5256957: Process and circuit versions for charging accumulators
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : SERIALLY CONNECTED BATTERIES OR CELLS : Having variable number of cells or batteries in series : Bypassable battery cell :)

Patent 5256958: Concentrator-based growable packet switch
(MULTIPLEX COMMUNICATIONS : PATHFINDING OR ROUTING : Switching a message which includes an address header : Particular switching network arrangement)

Patent 5256959: Control system for generator mounted on vehicle
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANS : Plural conditions : Including an electrical condition : Plural electrical conditions : Voltage and current :)

Patent 5256960: Portable dual band electromagnetic field radiation measurement apparatus
(ELECTRICITY: MEASURING AND TESTING : TESTING POTENTIAL IN SPECIFIC ENVIRONMENT (E.G., LIGHTNING STROKE) : Superconductors)

Patent 5256961: Method for measuring various measurable variables, and multimeter for performing the method
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Plural ranges, scales or registration rates : Tape, sheet (e.g., disk) or wire (e.g., magnetic) storage)

Patent 5256962: Method of troubleshooting electrical circuits using twist-on light
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Nonquantitative (e.g., hot-line indicator, polarity tester) : Selective filter)

Patent 5256963: Digital testing for high-impedance states in digital electronic circuits
(ELECTRICITY: MEASURING AND TESTING : PLURAL, AUTOMATICALLY SEQUENTIAL TESTS : Voltage probe)

Patent 5256964: Tester calibration verification device
(ELECTRICITY: MEASURING AND TESTING : MISCELLANEOUS : Combined)

Patent 5256965: Quality inspecting method and apparatus for detecting defects in magnetic disks by dividing a plurality of concentric tracks into
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetic information storage element testing : Dynamic information element testing : Magnetoresistive)

Patent 5256966: Method for detecting flaws in a steam generator tube using a flexible eddy current probe having coil bank switching
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetic sensor within material : Sensor supported, positioned, or moved within pipe : Magnetoresistive)

Patent 5256967: Fast NMR image acquisition with spectrally selective inversion pulses
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using a nuclear resonance spectrometer system : With signal decoupling :)

Patent 5256968: Measurement of high-frequency electrical signals by electro-optical effect
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Using radiant energy : Conductive field (e.g., mercury))

Patent 5256969: Gradient magnetic field coil for magnetic resonance imaging system
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Including a test sample and control sample)

Patent 5256970: Magnetic resonance apparatus
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Including a test sample and control sample)

Patent 5256971: Multiple loop coil with improved decoupling
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Including a test sample and control sample)

Patent 5256972: Body coil decoupling circuit
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Including a test sample and control sample)

Patent 5256973: Relay tester having a circuit to sense the voltage spihe caused by the armature movement
(ELECTRICITY: MEASURING AND TESTING : ELECTROMECHANICAL SWITCHING DEVICE : Relay : Shock testing)

Patent 5256974: Method and apparatus for a floating reference electric field sensor
(ELECTRICITY: MEASURING AND TESTING : ELECTROSTATIC FIELD : Using modulation-type electrometer : Which includes particular cell container structure)

Patent 5256975: Manually-operated continuity/shorts test probe for bare interconnection packages
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : For fault location : By capacitance measuring : Using a particular sensing electrode)

Patent 5256976: Power apparatus and method of location of a fault in a power apparatus on the basis of attenuation coefficients of electromagnetic
(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 5256977: High frequency surge tester methods and apparatus
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Winding or coil : For insulation fault)

Patent 5256978: Microwave moisture content analyzer
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Calibration : Having a lamp or light indicator)

Patent 5256979: Method and apparatus for measuring an unknown voltage, and power meter employing the same
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using resistance or conductance measurement : With voltage or current signal evaluation : Including a digital or logic circuit)

Patent 5256980: Frequency synthesizer incorporating vernier phase adjuster
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Synthesizer : With logic or bistable circuit)

Patent 5256981: Digital error corrected fractional-N synthesizer and method
(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 5256982: Radiographic film retaining device
(X-RAY OR GAMMA RAY SYSTEMS OR DEVICES : PHOTOGRAPHIC DETECTOR SUPPORT : Dental : With light projection)

Patent 5256983: Wide band amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having gain control means :)

Patent 5256984: Amplifier for controlling linear gain of wide band using external bias
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having gain control means :)

Patent 5256985: Current compensation technique for an operational amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having signal feedback means :)

Patent 5256986: Circuit arrangement for amplifying weak sensor currents
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including signal feedback means : Having negative feedback : Having emitter degeneration)

Patent 5256987: Power amplifier device having a plurality of power amplifier units connected in parallel
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including plural amplifier channels : Having frequency-responsive means or phase-shift means in feedback path)

Patent 5256988: Conical transverse electromagnetic divider/combiner
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including plural amplifier channels : Having frequency-responsive means or phase-shift means in feedback path)

Patent 5256989: Lock detection for a phase lock loop
(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 5256990: Compact, die-cast precision bandstop filter structure
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Waveguide : Tunable)

Patent 5256991: Broadband microwave active inductor circuit
(WAVE TRANSMISSION LINES AND NETWORKS : NEGATIVE RESISTANCE OR REACTANCE NETWORKS OF THE ACTIVE TYPE : Simulating specific type of reactance : Using gyrator : Including directly coupled resonant sections)

Patent 5256992: Electrical switch, particularly for controlling the supply of current to the electric starter motor of an internal combustion engine
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : Multiple contact type : Contacts-selectively, sequentially, alternately, or intermittently actuated : Contact-actuation means : Reciprocating or linearly sliding : Rotary armature)

Patent 5256993: Coil containment vessel for superconducting magnetic energy storage
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Superconductive type : With coil structure)

Patent 5256994: Programmable secondary clock generator
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : Tuning compensation : Motor control of oscillator)

Patent 5256995: Low helium permeability atomic frequency standard cell and method for forming same
(OSCILLATORS : MOLECULAR OR PARTICLE RESONANT TYPE (E.G., MASER) :)

Patent 5256996: Integrated coplanar strip nonlinear transmission line
(WAVE TRANSMISSION LINES AND NETWORKS : WAVE-SHAPING : With control of equalizer and/or delay network)

Patent 5256997: Linear phased filter for reducing ripple in group delay
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Equalizers : Having long line elements)

Patent 5256998: Actuator
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : With magneto-mechanical motive device (e.g., electromagnet with armature) : With permanent magnet : Induced current-type movable conductor (e.g., eddy current member))

Patent 5256999: Thread type magnetic core structure
(INDUCTOR DEVICES : RELATIVELY MOVABLE CORE AND COIL : Telescoping magnetic body and coil : Adjustable air gap)

Patent 5257000: Circuit elements dependent on core inductance and fabrication thereof
(INDUCTOR DEVICES : COIL OR COIL TURN SUPPORTS OR SPACERS : Printed circuit-type coil : Coils of different windings interposed)

Patent 5257001: Device for adjusting the bimetal blade of a circuit breaker
(ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES : ELECTROTHERMALLY ACTUATED SWITCHES : With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis) : With manual or other mechanical contact controlling means : With spring or other energy storage device : Snap-action : With adjusting or calibration means : With common trip-bar means)

Patent 5257002: Temperature operated switch construction and method of making the same
(ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES : THERMALLY ACTUATED SWITCHES : Expansible or vaporizable fluid actuated : Contact structure or composition of material : With pressure relief (e.g., venting))

Patent 5257003: Thermistor and its method of manufacture
(ELECTRICAL RESISTORS : RESISTANCE VALUE RESPONSIVE TO A CONDITION : Current and/or voltage (e.g., ballast resistor) : Thermistor type :)

Patent 5257004: Variable passive element
(ELECTRICAL RESISTORS : MECHANICALLY VARIABLE (E.G., RHEOSTAT) : Movable contact electrically adjustable over length of resistance element : With intervening connector between contact and element (e.g., taps) : With collector bar or ring : With collector bar)

Patent 5257005: Small value precision integrated circuit resistors
(ELECTRICAL RESISTORS : WITH TERMINAL : With three or more terminals : Plural resistors)

Patent 5257006: Method and apparatus for power line communications
(COMMUNICATIONS: ELECTRICAL : SYSTEMS : Signal over power line : Bidirectional (e.g., with transceiver) : Zero crossing)

Patent 5257007: Portable security system
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : With particular coupling link : Radio : Including power saving : Dosimeter)

Patent 5257008: Compressed air system with warning mechanism for air dryer service life indication
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Radio)

Patent 5257009: Reradiating EAS tag with voltage dependent capacitance to provide tag activation and deactivation
(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 5257010: Process for the deactivation of a reasonance label and circuit arrangement for the execution of the process
(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 5257011: Data altering means for multi-memory electronic identification tag
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Article placement or removal (e.g., anti-theft) : Detectable device on protected article (e.g., "tag") : Specified connector (e.g., phone jack-type plug))

Patent 5257012: Device for repelling pests
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Human or animal : Nondomestic animal (e.g., for hunting, fishing, or repelling) : Specified device housing or attachment means)

Patent 5257013: Protecting UV flame detecting apparatus
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Flame : By radiant energy : Specified device housing or attachment means)

Patent 5257014: Actuator detection method and apparatus for an electromechanical actuator
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Position responsive : Cranes)

Patent 5257015: Flat panel display control apparatus
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DATA RESPONSIVE CRT DISPLAY CONTROL : Alphanumeric display : Character generator : Up/down counter)

Patent 5257016: Apparatus for converting original character outline data including abridged special segment data, into normal character outline data
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Character generating : Alteration of stored font : Character generation using control points or hints)

Patent 5257017: Electronic billboard
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DATA RESPONSIVE CRT DISPLAY CONTROL : Data responsive deflection control : Number of pixels per row or column conversion (i.e., resolution conversion))

Patent 5257018: Display device
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Delay line)

Patent 5257019: Satellite selective call signalling system
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Having indication or alarm (e.g., location indication) : Location indication : Housing detail)

Patent 5257020: Variable message traffic signalling trailer
(COMMUNICATIONS: ELECTRICAL : TRAFFIC CONTROL INDICATOR : Portable : Barricade marker : Follow-up (e.g., circuit rebalanced when upset))

Patent 5257021: Low-level wind-shear alert system
(COMMUNICATIONS: ELECTRICAL : AIRCRAFT ALARM OR INDICATING SYSTEMS : Flight alarm : Wind shear : Magnetic field guide)

Patent 5257022: Method and apparatus for following a vehicle
(COMMUNICATIONS: ELECTRICAL : VEHICLE POSITION INDICATION : Rudder position indicator)

Patent 5257023: Onboard road map display systems
(COMMUNICATIONS: ELECTRICAL : VEHICLE POSITION INDICATION : Map display : Transmission of map data to vehicle : Traffic information : Modulated light source)

Patent 5257024: Search position encoder
(CODED DATA GENERATION OR CONVERSION : DIGITAL PATTERN READING TYPE CONVERTER : Brush and contacts or conductive pattern : Having optical waveguide)

Patent 5257025: High-speed sampling arrangement and apparatus using same
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Serial to parallel : Binary to Gray)

Patent 5257026: Method and apparatus for calibrating a multi-bit delta-sigma modular
(CODED DATA GENERATION OR CONVERSION : CONVERTER COMPENSATION : Synchro or resolver signal)

Patent 5257027: Modified sign-magnitude DAC and method
(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 5257028: Method of extracting phase errors caused by the atmosphere in the backscatter signal of a coherent imaging radar system carried by a
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : SYNTHETIC APERTURE RADAR : Mapping or imaging using synthetic aperture radar (EPO) : With frequency domain processing of the SAR signals in azimuth (EPO) : By varying gain or blocking receiver)

Patent 5257029: Transmission power control method and apparatus in satellite communication
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including a satellite : With pulse shaping)

Patent 5257030: Antenna system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including a steerable array : Eliptical)

Patent 5257031: Multibeam antenna which can provide different beam positions according to the angular sector of interest
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including a steerable array : With a switch : Controlled)

Patent 5257032: Antenna system including spiral antenna and dipole or monopole antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Plural diverse-type antennas using same active element : Including balanced doublet-type antenna : Running board)

Patent 5257033: Transmitter with a reduction of power of signals transmitted at harmonics
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : High frequency type loops : Plural : With feedback)

Patent 5257034: Collapsible apparatus for forming a paraboloid surface
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Antenna components : Reflector or director : Collapsible, foldable or adjustable : Luneberg type)

Patent 5257035: Perfecting printer and method for controlling double-face printing operation thereof
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Photo scanning : Record receiver or conveyor means therefor : Lens)

Patent 5257036: Ink jet recording process employing ink containing water-soluble dye
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Medium and processing means : Fluid (e.g., fluid specifics))

Patent 5257037: Compact image forming apparatus with color position adjustment
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Multicolor : Plural heads : Using light as exposure means : Drop sensors)

Patent 5257038: Focusing laser diode mount on a write head
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Specific optical structure : Specific lens : For detecting color)

Patent 5257039: Non-impact printhead and driver circuit for use therewith
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Driving circuitry : Including switching means)

Patent 5257040: System for printing asymmetrically positioned pairs of envelopes
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Including tensioning means)

Patent 5257041: Method and circuit for driving an electromechanical device rapidly with great precision
(RECORDERS : LIGHT OR BEAM RECORDING : Mirror galvanometer : Plural : Card control)

Patent 5257042: Thermal ink jet transducer protection
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With thermal force ejection : Composite ejector : Protective : Integrated)

Patent 5257043: Thermal ink jet nozzle arrays
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Array of ejectors : Full-line type : Movement)

Patent 5257044: Cap actuation mechanism for capping ink jet printheads
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : With cleaning or protector : Nozzle cap, cover, or protection : Movement :)

Patent 5257045: Ionographic printing with a focused ion stream
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : By information carrying flow of invisible charged particles : Specific ionographic head : Including latent image generation using luminescent material)

Patent 5257046: Direct electrostatic printing with latent image assist
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : By information carrying flow of invisible charged particles : Specific ionographic head : Including simultaneous development : Drop sensors)

Patent 5257047: Control apparatus and method for image-forming system
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Photo scanning : Optical elements interposed between record receiver and beam generator : Lens : Shutter device)

Patent 5257048: Optical element and photoreceptor registration system for a raster output scanner in an electrophotographic printer
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Photo scanning : Optical elements interposed between record receiver and beam generator : Lens : Shutter device)

Patent 5257049: LED exposure head with overlapping electric circuits
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Specific light source (e.g., LEDs assembly) : Including switching means)

Patent 5257050: Goggles, especially protective goggles for workers
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : Continuous rim mounting : With lens retaining or locking means : Fluid-filled or suction type)

Patent 5257051: Method and apparatus for adjusting the optical alignment of a film projection system
(OPTICS: IMAGE PROJECTORS : MISCELLANEOUS : Slides gripped or hooked)

Patent 5257052: Electrically driving apparatus of mirror in single-lens reflex camera
(PHOTOGRAPHY : SINGLE LENS REFLEX CAMERA : With mirror support or drive : Having self-erecting lens holder)

Patent 5257053: Position detecting device
(PHOTOGRAPHY : HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE : Power zoom : Having position sensor : Focus position adjusted according to focal length)

Patent 5257054: Film pressure structure for an elongated exposure station of a camera
(PHOTOGRAPHY : CAMERA DETAIL : Film restraining means or pressure plate : On camera door : Having actual or simulated handheld weapon structure)

Patent 5257055: View finder for camera with different selectable finder field frames
(PHOTOGRAPHY : WITH VIEWFINDER : Selective or adjustable viewfinder field : Tilting)

Patent 5257056: Camera
(PHOTOGRAPHY : CAMERA RELEASE CONTROL CIRCUIT : Diaphragm function only)

Patent 5257057: Magazine for a stack of film sheets
(PHOTOGRAPHY : CAMERA DETAIL : Detachable or removable film holder unit : Plate or cut film holder : Thrust type)

Patent 5257058: Interchangeable lens system
(PHOTOGRAPHY : HAVING LENS CONVERTER OR EXTENSION TUBE : Having indicator)

Patent 5257059: Developing processor
(PHOTOGRAPHY : FLUID-TREATING APPARATUS : Having photographic medium feed : And photographic medium immersed and removed : Strip type : Crane type : Three or more rollers)

Patent 5257060: Autofocus camera and a method of regulating the same
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having auxiliary illumination : Having plural emitters : Focus position adjusted according to focal length)

Patent 5257061: Range finder for passive-type autofocusing device
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Processing circuit : Image correlation type : Mirror type)

Patent 5257062: Focusing detection apparatus
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Optical detail with photoelement system : Dual reimage lens type : Focus position adjusted according to focal length)

Patent 5257063: Flashing controller
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having auxiliary illumination : With mechanical rangefinder)

Patent 5257064: Copying machine provided with a recirculating document feeder apparatus
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Copying both sides of original : Duplex :)

Patent 5257065: Apparatus for transporting exposed photographic films through and beyond a developing unit
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : With developing : And film severing :)

Patent 5257066: Pivoting film drive mount
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Detailed holder for original : Including adjustable or selective masking frame)

Patent 5257067: Apparatus for placing film mask in contact with object
(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 5257068: Clamshell-type electrophotographic duplex printer
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Clamshell type : New and waste toner container)

Patent 5257069: Copying machine control system controlling a plurality of copying machines through communication network
(ELECTROPHOTOGRAPHY : REMOTE MONITORING : With diverse image formation)

Patent 5257070: Selective control of distributed drives to maintain interdocument gap during jam recovery purge
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Document handling : Malfunction detection responsive : Purge : On or adjacent to platen)

Patent 5257071: Pivotal photoconductor belt assembly
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Photoconductive member : Belt : Alignment or tensioning : Toner cartridge)

Patent 5257072: Discharging device for copying apparatus
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Exposure : Having image editing : Details of erase light : Touch pad)

Patent 5257073: Corona generating device
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Charging : Corona : Having grid : Toner cartridge)

Patent 5257074: Image forming apparatus
(IMAGE ANALYSIS : PATTERN RECOGNITION : On-line recognition of handwritten characters : With separate timing or alignment marks)

Patent 5257075: Image forming apparatus
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of exposure : Having detection of toner (e.g., patch))

Patent 5257076: Toner feeding device capable of signalling need to replenish toner
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Consumable : Toner : Misstrip of copy)

Patent 5257077: Toner dispensing apparatus for a xerographic reproduction machine
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Dry development : Supplying new toner : Cartridge : Having internal rotary member : Including sample holder)

Patent 5257078: Image heating apparatus regulating shift of endless fixing film
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Fixing (e.g., fusing) : By heat and pressure : Continuous web : Cleaning member)

Patent 5257079: Electrostatic brush cleaner with a secondary cleaner
(ELECTROPHOTOGRAPHY : CLEANING OF IMAGING SURFACE : Fibrous brush : Having applied voltage : Lamination)

Patent 5257080: Image forming apparatus and its discharge system
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Copy : Delivering from transfer position : Discharge of copy (e.g., exit tray) : Having intermediate storage)

Patent 5257081: Image forming drive having two cover modes and a stapler for stapling a group of content pages and a cover page
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Copy : Interleaving (e.g., cover or partitioning sheet) : Platen)

Patent 5257082: Copier with automatic insert feed having an interrupt function
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Unacceptable copy coverage : Electrostatic)

Patent 5257083: Storage assembly for development stations in an electrostatographic reproduction apparatus
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Developing unit : Drum mount)

Patent 5257084: Golf swing measurement system
(OPTICS: MEASURING AND TESTING : VELOCITY OR VELOCITY/HEIGHT MEASURING : With light detector (e.g., photocell) : Vibrating or oscillating element)

Patent 5257085: Spectrally dispersive imaging lidar system
(OPTICS: MEASURING AND TESTING : PLURAL TEST : Lamp attachments)

Patent 5257086: Optical spectrophotometer having a multi-element light source
(OPTICS: MEASURING AND TESTING : BY DISPERSED LIGHT SPECTROSCOPY : Utilizing a spectrometer : Having diffraction grating means : Prior to testing)

Patent 5257087: Method and apparatus for measuring particles in a fluid
(OPTICS: MEASURING AND TESTING : FOR SIZE OF PARTICLES : By particle light scattering : Having adjustable color or bandwidth)

Patent 5257088: Apparatus and method for nondestructive inspection of a vehicle
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Having shearing : Having Schlieren effect)

Patent 5257089: Optical head for shearography
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Having shearing : Having Schlieren effect)

Patent 5257090: Laser diode liquid-level/distance measurement
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : For dimensional measurement : Displacement or distance : Contour or profile)

Patent 5257091: Optical alignment system for aligning a multiple gap tape head assembly
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : For dimensional measurement : For orientation or alignment : Between slider/disc (e.g., flying height))

Patent 5257092: Apparatus for measuring polarization and birefringence
(OPTICS: MEASURING AND TESTING : BY POLARIZED LIGHT EXAMINATION : With polariscopes : Including polarimeters : Step height (differential, between points))

Patent 5257093: Apparatus for measuring nanometric distances employing frustrated total internal reflection
(OPTICS: MEASURING AND TESTING : DIMENSION : Focus)

Patent 5257094: Helmet mounted display system
(OPTICAL: SYSTEMS AND ELEMENTS : HOLOGRAPHIC SYSTEM OR ELEMENT : Head up display : Spatial, phase or amplitude modulation)

Patent 5257095: Common geometry high voltage tolerant long channel and high speed short channel field effect transistors
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Variable threshold (e.g., floating gate memory device) : With floating gate electrode : With increased effective electrode surface area (e.g., tortuous path, corrugated, or textured electrodes))

Patent 5257096: Monitor television receiver
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Color balance or temperature (e.g., white balance) : Receiver type : Including feedback control : For color television)

Patent 5257097: Method and apparatus for selective interception of a graphics rendering operation for effecting image data modification
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Detail of image placement or content)

Patent 5257098: Printing method of color video printer
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Detail of image placement or content)

Patent 5257099: Central data processing station for satellite communication with local area audience response station
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : SATELLITE VIDEO DISTRIBUTION SYSTEM : Two-way : Return path : Provided on recordable medium)

Patent 5257100: Apparatus for reducing network patterns from the image of a fiber scope
(TELEVISION : SPECIAL APPLICATIONS : With endoscope : Image magnifying)

Patent 5257101: Apparatus and method for selecting a log orientation and pattern for sawing
(TELEVISION : SPECIAL APPLICATIONS : Manufacturing : Position detection : Alignment or positioning : With alternating polarization)

Patent 5257102: Television standards converters using motion vectors corresponding to correlation of horizontal and vertical pixel offsets
(TELEVISION : FORMAT CONVERSION : Scan rate variation)

Patent 5257103: Method and apparatus for deinterlacing video inputs
(TELEVISION : FORMAT CONVERSION : Line doublers type (e.g., interlace to progressive IDTV type) : Specified chrominance processing (e.g., Y/C separation) : Including use of a subcarrier)

Patent 5257104: Video signal processing apparatus
(TELEVISION : FORMAT : Including additional information : During sync, blanking, or overscan : During vertical blanking : During vertical blanking interval)

Patent 5257105: Display driving method and apparatus with noise signal processing
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Noise or undesired signal reduction : Specified color (e.g., saturation and contrast control))

Patent 5257106: Television signal receiver with memory for storing data on different television system
(TELEVISION : RECEIVER CIRCUITRY : Tuning : Color television)

Patent 5257107: Digital signal recording system for recording digital signals on video tape
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF COLOR TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Compressing when recording or decompressing when reproducing : Separately recorded)

Patent 5257108: Video signal processing circuit for improving contrast for an LCD display
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Gray scale transformation : Nonlinear amplitude modification (e.g., gamma) : Including frame or field delays)

Patent 5257109: Magnetic recording and reproducing apparatus
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF COLOR TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Recorder or reproducer fault condition compensation : Digital technique)

Patent 5257110: Image information transmission system
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Time (e.g., phase or frequency) correction : Digital technique : By controlling speed of record medium)

Patent 5257111: Continuous both-side playback type video disc apparatus
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Using disc : Selective mode (e.g., still or motion))

Patent 5257112: Facsimile mail system with mail center equipment
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Electronic mailbox : Composite image)

Patent 5257113: Video mixing technique using JPEG compressed data
(IMAGE ANALYSIS : IMAGE COMPRESSION OR CODING : Substantial processing of image in compressed form : Checking spelling for recognition)

Patent 5257114: Image communication apparatus with rolled record sheet cutter
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Specific signal processing circuitry : Image processing : Auxiliary signal controls apparatus at both transmitter and receiver)

Patent 5257115: Image recording apparatus using pseudo tone generated images
(FACSIMILE AND STATIC PRESENTATION PROCESSING : STATIC PRESENTATION PROCESSING (E.G., PROCESSING DATA FOR PRINTER, ETC.) : Attribute control : Multi-level image reproduction (e.g., gray level reproduction) : Halftoning (e.g., a pattern of print elements used to represent a gray level) : Print element property varied to effect halftone pattern : Density of print element (e.g., multi-level halftone) :)

Patent 5257116: High definition image generating system for image processing apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Specific signal processing circuitry : Image processing : Picture signal thresholding : Variable threshold determined by image or other condition (e.g., adaptive thresholding))

Patent 5257117: Computer-facsimile system having separately a sending device and a receiving device
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Specific signal processing circuitry : Facsimile control unit : Picture signal thresholding)

Patent 5257118: Method for holographically combining laser beams
(OPTICAL: SYSTEMS AND ELEMENTS : HOLOGRAPHIC SYSTEM OR ELEMENT : Using modulated or plural reference beams : Having nonplanar recording medium surface)

Patent 5257119: Image processing apparatus which adds apparatus identification data to images
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Auxiliary signal : Transmitter supplies auxiliary signal(s) : Auxiliary signal controls apparatus at both transmitter and receiver)

Patent 5257120: Image processing apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Specific signal processing circuitry : Facsimile alarm)

Patent 5257121: Multi-resolution spatial integration signal processor and method
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Specific signal processing circuitry : Signal enhancing : Auxiliary signal controls apparatus at both transmitter and receiver)

Patent 5257122: Ferroelectric liquid crystal display having gray steps or a continuous gray scale
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Producing a greyscale effect : With each cell displaying a different pattern)

Patent 5257123: Ferroelectric liquid crystal device with temperature compensation by rotation of compensator
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Detector of liquid crystal temperature : Fluorescent light source)

Patent 5257124: Low distortion laser system for AM fiber optic communication
(OPTICAL COMMUNICATIONS : MULTIPLEX : Wavelength division or frequency division (e.g., Raman, Brillouin, etc.) : Different sources : Lens)

Patent 5257125: Afocal optical system for focus error correction in laser scanning systems
(OPTICAL: SYSTEMS AND ELEMENTS : DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) : Logic gate)

Patent 5257126: Coherent optical fiber communications system using polarization modulation
(OPTICAL COMMUNICATIONS : TRANSMITTER : Having particular modulation : Including polarization : Using optical phase conjugation)

Patent 5257127: Device for doubling the frequency of a light wave using a three dimensional polymer network
(OPTICAL: SYSTEMS AND ELEMENTS : OPTICAL FREQUENCY CONVERTER : Harmonic generator : Magneto-optic crystal material)

Patent 5257128: Freezing/perfusion microscope stage
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Microscope : Stage or slide carrier : With temperature control : Binocular)

Patent 5257129: Real image type variable magnification viewfinder optical system
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Variable magnification : With prism or U-shaped optical path)

Patent 5257130: Apparatus and method for creating a real image illusion
(OPTICAL: SYSTEMS AND ELEMENTS : RELIEF ILLUSION : Stereo-viewers)

Patent 5257131: Polarization diffraction element and polarization detector employing the same
(OPTICAL: SYSTEMS AND ELEMENTS : POLARIZATION WITHOUT MODULATION : Light polarization without any external input : Supporting, mounting, enclosing or light shielding structure)

Patent 5257132: Broadband diffractive lens or imaging element
(OPTICAL: SYSTEMS AND ELEMENTS : DIFFRACTION : From zone plate : With photographic media)

Patent 5257133: Re-imaging optical system employing refractive and diffractive optical elements
(OPTICAL: SYSTEMS AND ELEMENTS : DIFFRACTION : From zone plate : With photographic media)

 

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