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Patent 5021602: Reactive compounds containing perfluorocyclobutane rings
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Esters having the thiocarboxylate group, -C(=X)X-, wherein the X's are the same or diverse chalcogens, with at least one X being sulfur, and wherein the single bonded X is bonded directly to an additional carbon, which carbon may be single bonded to any atom, but may be multiple bonded only to carbon : Three divalent chalcogens single bonded directly to trivalent phosphorus (e.g., trialkyl phosphites, etc.))
Patent 5021603: Thiuram polysulfide production
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Esters having the thiocarboxylate group, -C(=X)X-, wherein the X's are the same or diverse chalcogens, with at least one X being sulfur, and wherein the single bonded X is bonded directly to an additional carbon, which carbon may be single bonded to any atom, but may be multiple bonded only to carbon : Nitrogen bonded directly to the carbon of the -C(=X)X- group (e.g., thiocarbamates, etc.) : The -C(=X)X- is -C(=S)S- : Nitrogen or additional chalcogen attached indirectly to the nitrogen by acyclic nonionic bonding : Plural HHN-C(=S)S- groups, wherein substitution may be made for hydrogen only : Plural chalcogens in the acyclic chain)
Patent 5021605: Trifluorobenzene compounds
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) : Benzene ring bonded directly to the cyano group : Halogen attached indirectly to the cyano group by nonionic bonding : Two benzene rings bonded directly to the same oxygen, or nitrogen bonded directly to oxygen (e.g., nitro compounds, phenoxyphenyl compounds, etc.))
Patent 5021607: Oxidation of saturated hydrocarbon chains
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) : Ketones : Benzene ring containing : Processes : Carbon monoxide or peroxy containing reactant : Boron, phosphorus, or silicon containing material utilized)
Patent 5021608: Activating undercarpet cable from infloor conductors
(ELECTRICITY: CONDUCTORS AND INSULATORS : WALL MOUNTED CONDUITS AND/OR HOUSINGS : Tension devices)
Patent 5021610: Strain relief connection
(ELECTRICITY: CONDUCTORS AND INSULATORS : BOXES AND HOUSINGS : With conduit or cable opening, coupling means or hole closures : Fixtures coupling or mounting means)
Patent 5021611: Waterproof joint for wireharness
(ELECTRICITY: CONDUCTORS AND INSULATORS : CONDUITS, CABLES OR CONDUCTORS : Combined : With joints : Plural conductor and/or duct : Spark plugs)
Patent 5021612: Cable spacer
(ELECTRICITY: CONDUCTORS AND INSULATORS : INSULATORS : Mid-line spacers : With connector)
Patent 5021613: Ribbon loudspeaker
(ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES : ELECTRO-ACOUSTIC AUDIO TRANSDUCER : Electromagnetic (e.g., dyynamic) : Conductive diaphragm (e.g., ribbon) : Electrical hardware feature)
Patent 5021614: Power seat device
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : MULTIPLE CIRCUIT CONTROL : Multiple switch :)
Patent 5021615: On/off loadbreak switch
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : MULTIPLE CIRCUIT CONTROL : Pivoted contact : Dial type : Tap changers : With lift)
Patent 5021616: Switch cover
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : SWITCH ACTIVATION INHIBITOR (E.G., UNAUTHORIZED/INADVERTENT USE PREVENTION) : Actuator blocking device (e.g., latch) : Circuit breaker handle type (i.e., padlock))
Patent 5021617: Motor vehicle turn signal cancelling device
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : SPECIAL APPLICATION : Turn indicator type switches : Fluid pressure actuated)
Patent 5021618: Acceleration responsive switch
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : SPECIAL APPLICATION : Change of inclination or of rate of motion responsive (e.g., inertia and tilt switches) : Conducting fluid type : By movement of steering wheel or post relative to column)
Patent 5021619: Flow responsive switch apparatus
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : FLUID PRESSURE : Flow-responsive type : Magnet : Detent function performed by spring biased contact (e.g., knife blade))
Patent 5021620: High frequency heating apparatus with a temperature compensated switching element
(ELECTRIC HEATING : MICROWAVE HEATING : With control system : Power switching : With detector : Probe)
Patent 5021621: Microwave oven having integral mixing assembly
(ELECTRIC HEATING : MICROWAVE HEATING : Cookware (e.g., vessel, utensil, etc.) : With food mixer : With latch assembly)
Patent 5021622: Wire cut electrical discharge machine
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : Cutting or disintegrating (e.g., machining engraving) : Electric spark machining : Wire cutting : Portable)
Patent 5021623: Machining-liquid injection nozzle unit for traveling-wire EDM apparatus
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : Cutting or disintegrating (e.g., machining engraving) : Electric spark machining : Wire cutting : Portable)
Patent 5021624: Cutting tools for conventional and MIG electric welders
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : Cutting or disintegrating (e.g., machining engraving) : Electric spark machining : Hand-type tools : Portable)
Patent 5021625: Pre-resistance-welding resistance check
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : For bonding with pressure (e.g., resistance welding) : Systems of current supply : With indicator (e.g., recorder) : End or edge to surface)
Patent 5021626: Resistance welding apparatus
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : For bonding with pressure (e.g., resistance welding) : Systems of current supply : With indicator (e.g., recorder) : End or edge to surface)
Patent 5021627: Electrode for resistance welding surface-treated sheets of steel and method of manufacturing such electrodes
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : For bonding with pressure (e.g., resistance welding) : Electrodes (e.g., structure) : Particular material (e.g., dissimilar, aluminum))
Patent 5021628: Apparatus and method for reacting on matter
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : By arc : Using laser : Methods)
Patent 5021629: Electric plasma arc powder welded slide layer for rotary fluid pump vane
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : By arc : Using plasma : Methods : Arc ignition)
Patent 5021630: Laser soldering method and apparatus
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : By arc : Using laser : Welding : Methods : With chamber)
Patent 5021631: System for marking moving objects by laser beams
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : By arc : Using laser : Cutting : Etching or trimming : With chamber)
Patent 5021632: Laser beam machining head
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : By arc : Using laser : With monitoring : Condition responsive)
Patent 5021633: Engine block heater
(ELECTRIC HEATING : HEATING DEVICES : Combined with diverse-type art device : Vehicle or vehicle component : Motor or engine : Radiator or cooling system : With wear resistant liner)
Patent 5021634: Temperature controlled soldering iron employing a variable resistance heating element for temperature sensing
(ELECTRIC HEATING : HEATING DEVICES : Tool or instrument : Hand-manipulative : With power supply, voltage or current control, or connection and/or disconnection means : With thermal control means : Detachable tip)
Patent 5021635: Baker's oven
(ELECTRIC HEATING : HEATING DEVICES : Combined with container, enclosure, or support for material to be heated : Oven type : With resistance heating unit or units fixed enclosed by or located within heating area : Embedded within or between walls of container)
Patent 5021636: Electrical cooking unit and electrical cooking apparatus provided with this unit
(ELECTRIC HEATING : HEATING DEVICES : Combined with container, enclosure, or support for material to be heated : Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.) : Heating element gapped from underside of the exposed horizontal support surface (e.g., ceramic plate, radiation-type, etc.) : Receptacle (e.g., socket, an insulator block, a terminal block, etc.))
Patent 5021637: Method of controlling the supply of electric power to an electric sauna heater
(ELECTRIC HEATING : HEATING DEVICES : With power supply and voltage or current regulation or current control means : Controlling or regulating plural separate distinct heating resistance elements(i.e., one control system for all elements) : With total current or power limiting means : Support for the heating element)
Patent 5021638: Keyboard cover
(REGISTERS : KEYBOARDS : Total printing)
Patent 5021639: Automatic bank note transaction apparatus
(REGISTERS : SYSTEMS CONTROLLED BY DATA BEARING RECORDS : Banking systems : Price determination)
Patent 5021640: Apparatus capable of being operated as both a bar code reading device and a manual keyboard
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Combined with diverse art device (e.g., security tag deactivator) : Including an imager (e.g., CCD or camera-type reader))
Patent 5021641: Hand-held bar code scanner with jointly mounted scanning mirrors
(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 a moving mirror :)
Patent 5021642: Instant portable bar code reader
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Specified housing or mounting detail : Hand-held (e.g., portable) : Using a moving mirror)
Patent 5021643: Pointer/tracker for a phased array laser system
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Light beam wavefront phase adaptation : Based on image shift)
Patent 5021644: Presence detecting apparatus and method for automatic doors
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Controlled by article, person, or animal : Volume or level)
Patent 5021645: Photoelectric color sensor for article sorting
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Controlled by article, person, or animal : Inanimate article : Conveyor or chute : Vacuum tube type)
Patent 5021646: Remote optical path for capillary electrophoresis instrument
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light conductor : Electronic switch)
Patent 5021647: Optical fiber sensor having function of compensating for all drifting components
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light conductor : With light chopping or modulation : With coherent interferrometric light)
Patent 5021648: Motion tranducing through conversion of linear motion to circular motion
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light valve (e.g., iris diaphragm) : Actuated by dynamic external physical quantity : Shaft angle transducers : Bottles)
Patent 5021649: Relief diffraction grating encoder
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light valve (e.g., iris diaphragm) : Actuated by dynamic external physical quantity : Shaft angle transducers : Incremental shaft readers; i.e., with means to generate increments of angular shaft rotation : Using phase difference of output signals from plural photodetectors :)
Patent 5021650: Method of electronically correcting position errors in an incremental measuring system and measuring system for carrying out the method
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light valve (e.g., iris diaphragm) : Actuated by dynamic external physical quantity : Shaft angle transducers : Incremental shaft readers; i.e., with means to generate increments of angular shaft rotation : Using phase difference of output signals from plural photodetectors :)
Patent 5021651: Mounting for a ball lens on a bar code reader wand having a tapered lens bore
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Housings (in addition to cell casing) : Hoods, grating, baffles, diaphragms, masks)
Patent 5021652: Directional gamma ray spectrometer
(RADIANT ENERGY : GEOLOGICAL TESTING OR IRRADIATION : Well testing apparatus and methods : With radiation control to detector : Having plural detectors)
Patent 5021653: Geochemical logging apparatus and method for determining concentrations of formation elements next to a borehole
(RADIANT ENERGY : GEOLOGICAL TESTING OR IRRADIATION : Well testing apparatus and methods : With source and detector : With plural types of detectors :)
Patent 5021654: All ceramic ion mobility spectrometer cell
(RADIANT ENERGY : IONIC SEPARATION OR ANALYSIS : Ion beam pulsing means with detector synchronizing means : With time-of-flight indicator : For material recovery)
Patent 5021655: Apparatus and method for contactless measurement of coating thickness
(RADIANT ENERGY : INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES : Including a radioactive source : Magnetic field path-bending means)
Patent 5021656: Method for displaying autoradiograph
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With image recording : For specialized application : With detector control or regulating)
Patent 5021657: Thermal imager
(RADIANT ENERGY : INFRARED-TO-VISIBLE IMAGING : Including a light beam read-out)
Patent 5021658: Superconducting infrared detector
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Superconducting type : With conveyance)
Patent 5021659: Broadband superconducting detector using microsphere substrates
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Superconducting type : With conveyance)
Patent 5021660: Pyroelectric infrared detector and driving method therefor
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : Pyroelectric type : With a recirculation path)
Patent 5021661: Time-resolved infrared spectrophotometer
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : With selection of plural discrete wavelengths or bands : With radiation source : Including spectrometer or spectrophotometer : Including Fourier transform infrared spectrometry :)
Patent 5021662: Method and apparatus for real-time in-line material monitoring
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : With selection of plural discrete wavelengths or bands : Including detector array : With adjustment of conditions)
Patent 5021663: Infrared detector
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : Plural signalling means : Controlled by signalling means)
Patent 5021664: Method and apparatus for correcting the energy resolution of ionizing radiation spectrometers
(RADIANT ENERGY : CALIBRATION OR STANDARDIZATION METHODS :)
Patent 5021665: Oil level monitor
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Fluent material level signalling : Using radioactive tracer)
Patent 5021666: Pass-line independent web measuring method and apparatus
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : With means to inspect passive solid objects : Rectilinearly moving object : With periodic beam varying means)
Patent 5021667: Movable calibration collimator and system and method using same
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : With or including a luminophor : With radiant energy source : Body scanner or camera : With a collimator : With detector support)
Patent 5021668: Electro-optical middle ultra-violet sensors
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Ultraviolet light responsive means : Methods)
Patent 5021669: Process and system for the control of the focusing of a beam of monopolar charged particles
(RADIANT ENERGY : WITH CHARGED PARTICLE BEAM DEFLECTION OR FOCUSSING : Magnetic lens : With means to convey or guide the target)
Patent 5021670: Multipole element
(RADIANT ENERGY : WITH CHARGED PARTICLE BEAM DEFLECTION OR FOCUSSING : Housings (in addition to cell casing))
Patent 5021671: Radiation image storage panel
(RADIANT ENERGY : INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING : Luminescent device : Requiring an additional energy source to cause luminescence : With optically-stimulated phosphor : Rotary motion)
Patent 5021672: Etching of nanoscale structures
(RADIANT ENERGY : IRRADIATION OF OBJECTS OR MATERIAL : Irradiation of semiconductor devices : With optical member of material to directly modify luminous energy)
Patent 5021673: Web transport with anti-skew arrangement
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Controlling web, strand, strip, or sheet : Self-luminous target)
Patent 5021674: Process for determining the location of edges and photoelectronic scanning device for scanning edges
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring position : Edge : With translucent material)
Patent 5021675: Photoelectric mensuration device and method for determining PDC cutter wear
(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) : With triangulation)
Patent 5021676: Document-skew detection with photosensors
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring position : Angular orientation (e.g., skew) : With translucent material)
Patent 5021677: Light-scattering-type smoke detector
(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 5021678: Apparatus and method for actuating a passenger restraint system in a passenger vehicle
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : VEHICLE MOUNTED SYSTEMS : Automobile : Series-connected)
Patent 5021679: Power supply and oscillator for a computer system providing automatic selection of supply voltage and frequency
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : PLURAL SUPPLY CIRCUITS OR SOURCES : Substitute or emergency source : Storage battery or accumulator : Serially connected sources)
Patent 5021680: Voltage supply circuit for programming circuits of programmable logic arrays
(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 5021681: Jiter-invariant switched capacitor pulse shaper
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Having selection between plural continuous waveforms)
Patent 5021682: Instantaneous power limiting circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM : With specific source of supply or bias voltage : Stabilized (e.g., compensated, regulated, maintained, etc.) : With diverse type transistor devices : With field-effect transistor)
Patent 5021683: Circuit arrangement comprising two parallel branches for transmitting a binary signal
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : RELIABILITY : Redundant : Function of AND, OR, NAND, NOR, or NOT)
Patent 5021684: Process, supply, temperature compensating CMOS output buffer
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Output switching noise reduction : With field effect-transistor : Depletion or enhancement)
Patent 5021685: Input buffer circuit having a resistor for reducing through-current and a capacitor for preventing delay
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Output switching noise reduction : With field effect-transistor : Depletion or enhancement)
Patent 5021686: Logic circuit
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : FUNCTION OF AND, OR, NAND, NOR, OR NOT : Field-effect transistor (e.g., JFET, etc.) : Schottky-gate FET (i.e., MESFET) : Depletion or enhancement : Having plural output pull-up or pull-down transistors)
Patent 5021687: High speed inverting hysteresis TTL buffer circuit
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : ACCELERATING SWITCHING : Bipolar transistor : With Schottky device : Interference device (i.e., SQUID))
Patent 5021688: Two stage address decoder circuit for semiconductor memories
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : FUNCTION OF AND, OR, NAND, NOR, OR NOT : Decoding : Complementary FET`s)
Patent 5021689: Multiple page programmable logic architecture
(STATIC INFORMATION STORAGE AND RETRIEVAL : FLOATING GATE : Particular biasing : Tunnel programming : Verify signal)
Patent 5021690: Programmable logic array apparatus
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : MULTIFUNCTIONAL OR PROGRAMMABLE (E.G., UNIVERSAL, ETC.) : Array (e.g., PLA, PAL, PLD, etc.) : With field effect-transistor)
Patent 5021691: Level conversion circuit having capability of supplying output signal with controlled logical level
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : INTERFACE (E.G., CURRENT DRIVE, LEVEL SHIFT, ETC.) : Logic level shifting (i.e., interface between devices of different logic families) : Field-effect transistor (e.g., JFET, MOSFET, etc.) : ECL to/from GaAs FET (e.g., MESFET, etc.) :)
Patent 5021692: Integrator circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC INPUT TO OUTPUT FUNCTION : By integrating : Interstage coupling (e.g., level shift, etc.))
Patent 5021693: Control circuit for floating gate four-quadrant analog multiplier
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC INPUT TO OUTPUT FUNCTION : Combining of plural signals : Product : Quadrant : Field-effect type device)
Patent 5021694: Circuit for driving a gated p-n-p-n device
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : GATING (I.E., SWITCHING INPUT TO OUTPUT) : Utilizing three or more electrode solid-state device : Four or more layer device (e.g., thyristor, etc.) : Insulated gate FET (e.g., MOSFET, etc.))
Patent 5021695: Linear motor car system
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Linear : Piezoelectric element shape)
Patent 5021696: Cooling fan with reduced noise for variable speed machinery
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Cooling or fluid contact : Circulation : Self-forced : Suction pump or fan : Output member detail)
Patent 5021697: Auxiliary bearing design for active magnetic bearings
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Bearing or air-gap adjustment or bearing lubrication : Magnetic bearing : Impulse coupling)
Patent 5021698: Axial field electrical generator
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Permanent magnet machines : Permanent magnet rotor : Mounting (such as on a surface of a shaft) : Sleeve parallel to magnetic face : Spring mounted flux shunt)
Patent 5021699: Interdigital transducer for surface acoustic wave filter
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Surface acoustic wave devices : Interdigitated electrodes :)
Patent 5021700: Driving apparatus for ultrasonic motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Electrical systems : Input circuit for simultaneous electrical and mechanical output from piezoelectric element : Traveling wave motor :)
Patent 5021701: Piezoelectric vibrator mounting system for a nebulizer
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Supported by elastic material : Sealed unit)
Patent 5021702: Electron beam apparatus including a plurality of ion pump blocks
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH EVACUATING PUMP : Control electrode unit)
Patent 5021703: Metal halide lamp
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH TEMPERATURE MODIFIER : Double wall, jacket or casing for envelope : Sealed casing for envelope : Flow directing means in casing)
Patent 5021704: Method and apparatus for cooling electrodeless lamps
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH TEMPERATURE MODIFIER : Using liquids or fluid flow directing means : Closed duct type (e.g., for liquid))
Patent 5021705: Method of fabricating an image pick-up tube and target section used therewith
(ELECTRIC LAMP AND DISCHARGE DEVICES : SECONDARY EMISSION PREVENTION : Plural secondary emissive electrodes)
Patent 5021706: Modified X'mas lamp structure and its related lamp base
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH ENVELOPE : Having base and connector : Base attached to the envelope with friction or other mechanical means : Having screw thread coupling contact)
Patent 5021707: Color picture tube having shadow mask with improved support
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Shadow mask, support or shield : Monoscope)
Patent 5021708: Cathode for emission of electrons and electron tube with a cathode of this type
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Ray generating or control : Including cathode assembly : Internal)
Patent 5021709: Supporting structure for an electron gun heater
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Ray generating or control : With support for electrode : With focus electrode adjacent cathode)
Patent 5021710: Insect attraction lamp
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : With gaseous discharge medium : Phosphor on envelope wall : With protective coating or filter : Plural)
Patent 5021711: Quartz lamp envelope with molybdenum foil having oxidation-resistant surface formed by ion implantation
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH GAS OR VAPOR : Having electrode lead-in or electrode support sealed to envelope : With positive ion or cathode shield)
Patent 5021712: Apparatus for compensating for image rotation in a CRT display
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Compensating for stray deflecting fields : Inductor or distributed parameter-type inductive structure)
Patent 5021713: Magnetron
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : COMBINED LOAD DEVICE OR LOAD DEVICE TEMPERATURE MODIFYING MEANS AND ELECTRICAL CIRCUIT DEVICE STRUCTURE : Distributed parameter resonator-type magnetron : Traveling wave type with delay-type transmission line)
Patent 5021714: Circuit for starting and operating fluorescent lamps
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : WITH CATHODE OR CATHODE HEATER SUPPLY CIRCUIT : Discharge device and/or rectifier in the cathode or heater circuit : Series connected cathodes or heaters)
Patent 5021715: Lighting system for roadside signs
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : WITH RADIANT ENERGY SENSITIVE CONTROL MEANS : Electric switch controlled by the radiant energy responsive device : Selective energization of the load devices)
Patent 5021716: Forward inverter ballast circuit
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PERIODIC SWITCH IN THE SUPPLY CIRCUIT : Periodic switch in the primary circuit of the supply transformer : Periodic switch selectively connectable to plural load device circuits)
Patent 5021717: Operating system for multiple fluorescent lamps
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL LOAD DEVICE SYSTEMS : Plural discharge device loads : Alternate circuit closing)
Patent 5021718: Negative glow discharge lamp
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : DISCHARGE DEVICE LOAD : Plural gases or vapors in the discharge device : Condenser in the control circuit)
Patent 5021719: Display
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With ray-deflecting stage interposed between plural concentrating or accelerating and/or de-accelerating stage or co-extensive with one such stage)
Patent 5021720: Display apparatus of the cathode ray tube type
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With ray deflection distortion correction or reduction : Including plural cores or coils)
Patent 5021721: Electric power steering system for a motor vehicle
(ELECTRICITY: MOTIVE POWER SYSTEMS : CONSTANT MOTOR CURRENT, LOAD AND/OR TORQUE CONTROL : Initial, "cracking" or "starting from rest" torque control)
Patent 5021722: Composable protection and control apparatus for motors
(ELECTRICITY: MOTIVE POWER SYSTEMS : LIMITATION OF MOTOR LOAD, CURRENT, TORQUE OR FORCE (E.G., PREVENTING OVERLOAD) : Control of motor load or device driven)
Patent 5021723: AC motor control
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Reversing : With controlled electronic switch for phase reversal : With de-energizable start winding)
Patent 5021724: Controlling apparatus for induction motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Primary circuit control : Responsive to motor condition : Responsive to speed or rotation phase angle : With controlled power conversion : With plural capacitors)
Patent 5021725: Circuit arrangement for preventing inductive interference in an electric car
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Primary circuit control : Responsive to motor condition : Responsive to speed or rotation phase angle : With controlled power conversion : Including inverter : With variable temperature coefficient impedance element)
Patent 5021726: Process for driving an alternating-current motor and an alternating current motor which can be driven in accordance with this process
(ELECTRICITY: MOTIVE POWER SYSTEMS : INDUCTION MOTOR SYSTEMS : Primary circuit control : Frequency control : With voltage pulse time control : Pluse width modulation or chopping : Including inverter)
Patent 5021727: Electric power supply system for motor vehicle
(ELECTRICITY: SINGLE GENERATOR SYSTEMS : COMBINED CONTROL OF GENERATING MEANS AND LOAD CIRCUIT : By control of excitation)
Patent 5021728: Power source apparatus for electronic equipment
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using a three or more terminal semiconductive device as the final control device : Including plural final control devices : Switched (e.g., on-off control) : Parallel connected :)
Patent 5021729: Differential current source
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : SELF-REGULATING (E.G., NONRETROACTIVE) : Using a three or more terminal semiconductive device as the final control device : Controllably saturable)
Patent 5021730: Voltage to current converter with extended dynamic range
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : SELF-REGULATING (E.G., NONRETROACTIVE) : Using a three or more terminal semiconductive device as the final control device : For current stabilization : Including parallel paths (e.g., current mirror) : With amplifier connected to or between current paths : In flyback path)
Patent 5021731: Thermo-optical current sensor and thermo-optical current sensing systems
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Using radiant energy : Conductive field (e.g., mercury))
Patent 5021732: Burn-in testing equipment having an instrumentation control module
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : With temperature control : Of reflected test signal)
Patent 5021733: Burn-in apparatus
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : With temperature control : Of reflected test signal)
Patent 5021734: In-line coaxial surge protector and test fixture
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : By spark or arc discharge)
Patent 5021735: Opto-electronic bachometer and position detector of an electric motor
(ELECTRICITY: MEASURING AND TESTING : ELECTRICAL SPEED MEASURING : Including speed-related frequency generator : Including radiant energy detector : Permanent magnet type)
Patent 5021736: Speed/position sensor calibration method with angular adjustment of a magnetoresistive element
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Calibration : Using thermionic emission)
Patent 5021737: Proximity sensor resistant to axial and torsional forces
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Displacement : Using thermionic emission)
Patent 5021738: Field variable, electronically controlled, nested coil eddy current probe
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : With means to create magnetic field to test material : Plural magnetic fields in material : With backing member)
Patent 5021739: Superconductor type radio frequency with adjustable inductance magnetic flux measuring circuit
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetometers : Superconductive magnetometers : Plural sensors)
Patent 5021740: Method and apparatus for measuring the distance between a body and a capacitance probe
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using capacitive type measurement : With a capacitive sensing means : Having fringing field coupling : Including a tuned or resonant circuit)
Patent 5021741: Cast charged particle drift tube
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : HIGH ENERGY PARTICLE ACCELERATOR TUBE : Magnetic field acceleration means : Linear accelerator (Linac) : With device discharging a condenser)
Patent 5021742: Laser amplifier
(OPTICAL: SYSTEMS AND ELEMENTS : OPTICAL AMPLIFIER : Multiple pass : Semiconductor)
Patent 5021743: Biasing networks for matrix amplifiers
(AMPLIFIERS : WITH DISTRIBUTED PARAMETER-TYPE COUPLING MEANS : Distributed amplifier : Having different configurations)
Patent 5021744: Differential amplifier with differential or single-ended output
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Electron beam device)
Patent 5021745: Difference amplifier circuit
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having field effect transistor :)
Patent 5021746: Amplifier output stage
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including push-pull amplifier : Having particular biasing arrangement)
Patent 5021747: Symmetrical variable impedance apparatus employing MOS transistors
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including gain control means : Having attenuation means in signal transmission path : Having emitter degeneration)
Patent 5021748: Circular ring resonator distributive electromagnetic signal processor
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including distributed parameter-type coupling : Having particular biasing means)
Patent 5021749: Switchable capacitor loop filter for phase locked loop
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : Particular error voltage control (e.g., intergrating network) : Motor control of oscillator)
Patent 5021750: CMOS oscillator
(OSCILLATORS : SOLID STATE ACTIVE ELEMENT OSCILLATOR : Transistors : Relaxation oscillator : Inductor controlled AFC)
Patent 5021751: Quadrature oscillator network
(OSCILLATORS : PHASE SHIFT TYPE : Transitron type)
Patent 5021752: Voltage controlled oscillator (VCO)
(OSCILLATORS : WITH FREQUENCY ADJUSTING MEANS : With voltage sensitive capacitor : Self-quenched)
Patent 5021753: Splatter controlled amplifier
(MODULATORS : PHASE SHIFT KEYING MODULATOR OR QUADRATURE AMPLITUDE MODULATOR : Including discrete semiconductor device)
Patent 5021754: Fractional-N synthesizer having modulation spur compensation
(MODULATORS : FREQUENCY MODULATOR : Including stabilization or alternatively distortion, noise or other interference prevention, reduction, or compensation : Automatic frequency stabilization or control : Phase or frequency locked loop : Modulating signal applied to plural elements of the loop :)
Patent 5021755: N-way signal splitter with isolated outputs
(WAVE TRANSMISSION LINES AND NETWORKS : PLURAL CHANNEL SYSTEMS : Having branched circuits : With impedance matching : Including long line element : Using TEM lines : Stripline :)
Patent 5021756: Transversal and recursive filters useable in a diplexer
(WAVE TRANSMISSION LINES AND NETWORKS : PLURAL CHANNEL SYSTEMS : Having branched circuits : For providing frequency separation : Using coupled windings)
Patent 5021757: Band pass filter
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Stripline or microstrip : Tunable : Monolithic structure)
Patent 5021758: Circuit arrangement comprising MESFET switched spiral inductor
(WAVE TRANSMISSION LINES AND NETWORKS : LONG LINE ELEMENTS AND COMPONENTS : Shielded type)
Patent 5021759: Package for very high frequency integrated circuits
(WAVE TRANSMISSION LINES AND NETWORKS : LONG LINE ELEMENTS AND COMPONENTS : Strip type : Including spaced, electrically compensated, internal support means)
Patent 5021760: Solenoid switch contact and mounting assembly
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : Contact composition or structure : With pressure-maintaining or adjusting means)
Patent 5021761: High-amp circuit breaker and a bistable element therefor
(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 direct contact separating means (e.g., plunger camming means) : Reciprocating or slidable motion device)
Patent 5021762: Thermal cycling switch
(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 external or auxiliary heating means : With heater-adjusting, shunting or short-circuiting means : Responsive to diverse conditions or of diverse operative characteristics)
Patent 5021763: Environment protected industrial microcomputer
(COMMUNICATIONS: ELECTRICAL : TACTUAL INDICATION : With input means (e.g., keyboard) : Intermittent)
Patent 5021764: Diagnostics for electronic transmission control system
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : Internal alarm or indicator responsive to a condition of the vehicle : Operation efficiency (e.g., engine performance, driver habits) : Accessory (e.g., speaker, radio face plate, etc.))
Patent 5021765: Security system having detector means sensitive to the proximity of at least one detected object
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : With particular coupling link : Radio : Having plural distinct sensors (i.e., for surrounding conditions) : Proximity : Programmable)
Patent 5021766: Intrusion detection system
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Intrusion detection : Disturbance of fluid pressure : Permutation)
Patent 5021767: Method and an apparatus for electronically identifying articles moving along a surface
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Interrogation response : Interrogation signal detail : Power up : Audible)
Patent 5021768: Detector for detecting resistance between fingers
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Human or animal : Detectable device on protected article (e.g., "tag"))
Patent 5021769: Ice detector for protecting boats
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Ice formation : By ionization or conductivity)
Patent 5021770: Image display system and data input apparatus used therein
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Animation)
Patent 5021771: Computer input device with two cursor positioning spheres
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Cursor mark position control device : Mouse : Rotatable ball detector : Enlargement only)
Patent 5021772: Interactive real-time video processor with zoom pan and scroll capability
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graphic manipulation (object processing or display attributes) : Merge or overlay : Placing generated data in real scene : Rectangular region)
Patent 5021773: Fibre optic display device
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Display elements arranged in matrix (e.g., rows and columns) : Plural mechanically movable display elements : With a permanent magnet placed on movable display elements : Input/output liquid crystal display panel)
Patent 5021774: Method and circuit for scanning capacitive loads
(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 : Liquid crystal display elements (LCD) : Control means at each display element : Including transformer)
Patent 5021775: Synchronization method and circuit for display drivers
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY DRIVING CONTROL CIRCUITRY : Display power source : Synchronizing means : Changing of subpixel location over time)
Patent 5021776: Electronic combination of lock with changeable entry codes, lock-out and programming code
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Intelligence comparison for controlling : Authorization control (e.g., entry into an area) : Varying authorization : Code programming : Including temperature detection)
Patent 5021777: Mode-selectable communications system
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Interrogation response : Additional control : Programming (e.g., read/write) : Audible)
Patent 5021778: Capacitance coupled proximity identification system
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Interrogation response : Interrogation signal detail : Power up : Audible)
Patent 5021779: Security device
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Pulse responsive actuation : Serial : Radio link : Counting chain)
Patent 5021780: Bus passenger alerting system
(COMMUNICATIONS: ELECTRICAL : VEHICLE POSITION INDICATION : At remote location : Vehicle's arrival or expected arrival at remote location along route indicated at that remote location (e.g., bus arrival systems) : Glide slope or path)
Patent 5021781: Two stage quadrature incremental encoder
(CODED DATA GENERATION OR CONVERSION : DIGITAL PATTERN READING TYPE CONVERTER : Optical : Constant distance code)
Patent 5021782: Variable length encoding method and variable length decoding method, encoding device and decoridng device for the implementation of this
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : To or from variable length codes : To or from Morse code)
Patent 5021783: Method for operating an apparatus for facilitating communications
(CODED DATA GENERATION OR CONVERSION : ANALOG TO DIGITAL CONVERSION FOLLOWED BY DIGITAL TO ANALOG CONVERSION : To or from code based on probability)
Patent 5021784: Calibrated current source with ripple reduction
(CODED DATA GENERATION OR CONVERSION : CONVERTER CALIBRATION OR TESTING : Temperature compensation)
Patent 5021785: Floating point digital to analog converter with bias to establish range midpoint
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Nonlinear : Field effect transistor)
Patent 5021786: Analog to digital and digital to analog signal processors
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Differential encoder and/or decoder (e.g., delta modulation, differential pulse code modulation) : Linearization (e.g., nonlinear transfer characteristic compensates for nonlinear transducer))
Patent 5021787: Digital-analog converter for conversion of law A- encoded digital signals into analog signals
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Digital to analog conversion : Using charge coupled devices or switched capacitances : With rollover feature (i.e., antidoublestrike))
Patent 5021788: Digital analog converter
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Digital to analog conversion : With intermediate conversion of digital value to time interval : With rollover feature (i.e., antidoublestrike))
Patent 5021789: Real-time high resolution autofocus system in digital radar signal processors
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : SYNTHETIC APERTURE RADAR : Mapping or imaging using synthetic aperture radar (EPO) : With time domain processing of the SAR signals in azimuth, e.g. time focusing (EPO) : By varying gain or blocking receiver)
Patent 5021790: Microwave date transmission apparatus
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Unique identity : With defruiting or degarbling)
Patent 5021791: Radar systems
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RETURN SIGNAL CONTROLS RADAR SYSTEM : Receiver : Gain or threshold : Constant false alarm rate (CFAR) : With constant beat frequency)
Patent 5021792: System for determining direction or attitude using GPS satellite signals
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including a satellite : With position indicating : Using Global Positioning Satellite (GPS or Glonass) : Attitude determination :)
Patent 5021793: Phased array antenna method and system for adaptively positioning nulls
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Utilizing correlation techniques : Sum of each antenna signal : Mixing each antenna channel signal)
Patent 5021794: Personal emergency locator system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Position indicating (e.g., triangulation) : Land vehicle location (e.g., bus, police car : Having traffic control)
Patent 5021795: Passive temperature compensation scheme for microstrip antennas
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Microstrip : Reflector or director)
Patent 5021796: Broad band, polarization diversity monopulse antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With vehicle : Vehicle part of active antenna or vice versa :)
Patent 5021797: Antenna for transmitting elliptically polarized television signals
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Plural separate diverse type : Including balanced doublet-type antenna : Running board)
Patent 5021798: Antenna with positionable reflector
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With means for moving directive antenna for scanning, sweeping or orienting : Wave guide type antenna : With feedback)
Patent 5021799: High permitivity dielectric microstrip dipole antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Balanced doublet - centerfed (e.g., dipole) : Sheet or wing type : With main and subreflector (Casse-grain type))
Patent 5021800: Two terminal antenna for adaptive arrays
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Balanced doublet - centerfed (e.g., dipole) : With coupling network or impedance in the leadin : With reflector and director)
Patent 5021801: Antenna switching system
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Switching between antennas and lines : Sectional)
Patent 5021802: Thermally reversible sol-gel phase change ink or bubble jet ink
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Fluid or fluid source handling means : Fluid (e.g., fluid specifics) : Hot-melt (e.g., phase-change) : With carrier)
Patent 5021803: Ink jet parallel cusp producing slot or edge configured nozzle system
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Continuous stream (includes dispersion) : With individual drop generation and/or control : Drop generation means : Plural piezoelectric laminate)
Patent 5021804: Thermal transfer color printer
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Multicolor : Single-head type (e.g., multipass) : Having single layer colored transfer material : Fixing or fusing)
Patent 5021805: Recording device with sheet heater
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Preheating : Transfer material or recording medium : Having single layer colored transfer material)
Patent 5021806: Thermal head
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Specific resistance recording element type : Having auxiliary means for conducting heat : Using pulse width modulation)
Patent 5021807: Apparatus for electrophotography representing half-tones
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Tone marking : By varying intensity of light beam : Specific lens)
Patent 5021808: Laser actuated recording apparatus
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With thermal force ejection : Head separate from fluid supply : Flow path)
Patent 5021809: Ink jet recording device with pressure-fluctuation absorption
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Fluid or fluid source handling means : With means to reduce vibration in the fluid (damping) : With recirculation)
Patent 5021810: Printing machine
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Specific electrostatic head : Using recording head to selectively charge toner : Block driving)
Patent 5021811: Recycleable element recycle counter and method
(PHOTOGRAPHY : DISPOSABLE OR RECYCLABLE CAMERA : Object support)
Patent 5021812: Camera system
(PHOTOGRAPHY : CAMERA DETAIL : Lens mount : Bayonet mount : Having electrical contact detail : Double holder)
Patent 5021813: Manually operated handle for panoramic camera
(PHOTOGRAPHY : SCANNING CAMERA : Synchronization of film and camera movement : Having stabilizing (e.g., gyroscope, etc.))
Patent 5021814: Single-lens reflex camera with strobe incorporated therein
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Optical detail with photoelement system : Microprism or lenslet : Focus position adjusted according to focal length)
Patent 5021815: Viewfinder for tele/pan camera
(PHOTOGRAPHY : PSEUDO ZOOM : Camera release)
Patent 5021816: Camera apparatus for use with film cassette having film exposure status indicator
(PHOTOGRAPHY : CAMERA DETAIL : Detachable or removable film holder unit : Film cassette or cartridge : Film or spool locking means : Opposite movement)
Patent 5021817: Automatic focusing camera
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Reliability of focus/distance signal : With mechanical rangefinder)
Patent 5021818: Multi-area brightness measuring apparatus
(PHOTOGRAPHY : EXPOSURE CONTROL CIRCUIT : Having plural photocells : More than two photometering areas : Indicating power source status)
Patent 5021819: Circuit breaker with positive over-center acceleration
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : Automatic circuit-interrupting devices (e.g., circuit-protective devices) : With contact biasing, holding or pressure control means : With common latch or trip means)
Patent 5021820: Order entry process for magnetically encodable film with dedicated magnetic tracks
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Identifying, composing, or selecting : Regulating light intensity or exposure time)
Patent 5021821: Film circuit substrate exposure apparatus
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Step and repeat : Reflector between original and photo-sensitive paper)
Patent 5021822: Image scanning apparatus having exposure lamp lighting on at improved timing
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Illumination systems or details : Electricity to lamp controlled : Vertical optical path)
Patent 5021823: Photographic exposure apparatus
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Illumination systems or details : Electricity to lamp controlled : Vertical optical path)
Patent 5021824: Recording apparatus having a detachable recording material storing unit
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Detailed holder for photosensitive paper : Including shutter, diaphragm, polarizer or filter)
Patent 5021825: Latching mechanism for a removable processing cartridge in a photocopying device
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Process cartridge unit : Developer seal)
Patent 5021826: Electrophotographic copying machine having a function of judging whether a copying operation can be performed responsive to a remainder amount
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Consumable : Copy medium supply)
Patent 5021827: Image forming process control method and apparatus
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Service mode : Electrostatic)
Patent 5021828: Copying apparatus having a consumable part
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Consumable : Copy medium supply)
Patent 5021829: Multicolor image forming apparatus and transfer roller reindexing mechanism
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Color : Copy medium carrier (e.g., drum or belt) : Having electrode)
Patent 5021830: Electrostatic recording apparatus
(ELECTROPHOTOGRAPHY : INTERNAL MACHINE ENVIRONMENT : Particle or contaminant control : Seal : Developer seal : Concentration detection)
Patent 5021831: Filter for removing smoke and toner dust used in electrophotographic/electrostatic recording apparatus
(ELECTROPHOTOGRAPHY : INTERNAL MACHINE ENVIRONMENT : Forced air circulation : Having filtering (e.g., ozone removal) : Having priority interrupt)
Patent 5021832: Electrophotographic copier having additional information recording function
(ELECTROPHOTOGRAPHY : COMBINED WITH DIVERSE SUBJECT MATTER : With diverse image formation : Electrostatic : Light (e.g., laser, LED, LCD) : Composite image :)
Patent 5021833: Copying machine with multiple light sources
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Plural : Reflector in optical path)
Patent 5021834: Wet-type image formation apparatus
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Liquid development : Removing excess developer (e.g., squeegee) : Fountain)
Patent 5021835: Multicolor imaging apparatus with improved transfer means
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Color : Copy medium carrier (e.g., drum or belt) : Having electrode)
Patent 5021836: Method and device for transferring two images to different sides of a receiving sheet
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Dry development)
Patent 5021837: Apparatus discharged sheet stacking
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Copy : Delivering from transfer position : Discharge of copy (e.g., exit tray) : Having intermediate storage)
Patent 5021838: Preferred toner/carrier properties
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Plural diverse (e.g., color) : Toner images overlapped : Opposite polarity : Optical detector)
Patent 5021839: FET with a super lattice channel
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : THIN ACTIVE PHYSICAL LAYER WHICH IS (1) AN ACTIVE POTENTIAL WELL LAYER THIN ENOUGH TO ESTABLISH DISCRETE QUANTUM ENERGY LEVELS OR (2) AN ACTIVE BARRIER LAYER THIN ENOUGH TO PERMIT QUANTUM MECHANICAL TUNNELING OR (3) AN ACTIVE LAYER THIN ENOUGH TO PERMIT CARRIER TRANSMISSION WITH SUBSTANTIALLY NO SCATTERING (E.G., SUPERLATTICE QUANTUM WELL, OR BALLISTIC TRANSPORT DEVICE) : Heterojunction : Quantum well : Superlattice : Field effect device : Si x Ge 1-x)
Patent 5021840: Schottky or PN diode with composite sidewall
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : SCHOTTKY BARRIER : In integrated structure : With specified Schottky metal)
Patent 5021841: Semiconductor device with controlled negative differential resistance characteristic
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Junction field effect transistor (unipolar transistor) : Physical deformation (e.g., strain sensor, acoustic wave detector))
Patent 5021842: Trench DRAM cell with different insulator thicknesses
(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) : Capacitor in trench : With means to insulate adjacent storage nodes (e.g., channel stops or field oxide) : Si x Ge 1-x)
Patent 5021843: Semiconductor integrated circuit
(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 : Combined with passive components (e.g., resistors) : With polysilicon interconnections to source or drain regions (e.g., polysilicon laminated with silicide))
Patent 5021844: 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 : Microwave integrated circuit (e.g., microstrip type) : With contact or heat sink extending through hole in semiconductor substrate, or with electrode suspended over substrate (e.g., air bridge) : Si x Ge 1-x)
Patent 5021845: Semiconductor device and process fabrication thereof
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Short channel insulated gate field effect transistor : Gate controls vertical charge flow portion of channel (e.g., VMOS device) : Gate electrode in groove : Plural gate electrodes or grid shaped gate electrode : Separate control electrodes for charging and for discharging floating electrode)
Patent 5021846: MOS semiconductor device with an inverted U-shaped gate
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Short channel insulated gate field effect transistor : Gate controls vertical charge flow portion of channel (e.g., VMOS device) : Gate electrode in groove : With charging or discharging by control voltage applied to source or drain region (e.g., by avalanche breakdown of drain junction))
Patent 5021847: Split gate memory array having staggered floating gate rows and method for making same
(STATIC INFORMATION STORAGE AND RETRIEVAL : FLOATING GATE : Particular connection : Virtual ground : Weak inversion injection)
Patent 5021848: Electrically-erasable and electrically-programmable memory storage devices with self aligned tunnel dielectric area and the method of
(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 additional contacted control electrode : With irregularities on electrode to facilitate charging or discharging of floating electrode :)
Patent 5021849: Compact SRAM cell with polycrystalline silicon diode load
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : With plural, separately connected, gate electrodes in same device : For protecting against gate insulator breakdown)
Patent 5021850: Silicon thin film transistor
(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 : Field effect device in amorphous semiconductor material : In array having structure for use as imager or display, or with transparent electrode : High temperature (i.e., >30o Kelvin))
Patent 5021851: NMOS source/drain doping with both P and As
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Short channel insulated gate field effect transistor : Gate controls vertical charge flow portion of channel (e.g., VMOS device) : Gate electrode in groove : Gate electrode self-aligned with groove : Separate control electrodes for charging and for discharging floating electrode)
Patent 5021852: Semiconductor integrated circuit device
(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 : Combined with bipolar transistor : With polysilicon interconnections to source or drain regions (e.g., polysilicon laminated with silicide))
Patent 5021853: N-channel clamp for ESD protection in self-aligned silicided CMOS process
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : With overvoltage protective means : For protecting against gate insulator breakdown : In complementary field effect transistor integrated circuit : Including means to eliminate island edge effects (e.g., insulating filling between islands, or ions in island edges))
Patent 5021854: Silicon avalanche photodiode array
(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 : Avalanche junction : Antireflection coating)
Patent 5021855: Gate turn-off thyristor
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : REGENERATIVE TYPE SWITCHING DEVICE (E.G., SCR, COMFET, THYRISTOR) : With extended latchup current level (e.g., gate turn off "GTO" device) : Cathode emitter or cathode electrode feature : External gate terminal structure or composition)
Patent 5021856: Universal cell for bipolar NPN and PNP transistors and resistive elements
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : BIPOLAR TRANSISTOR STRUCTURE : With multiple separately connected emitter, collector, or base regions in same transistor structure)
Patent 5021857: Two dimensional electron gas semiconductor device
(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 : Insulated gate field effect transistors of different threshold voltages in same integrated circuit (e.g., enhancement and depletion mode) : Selected groups of complete field effect devices having different threshold voltages (e.g., different channel dopant concentrations))
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