|
Patent 5291020: Method and apparatus for detecting direction and speed using PIR sensor
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : Methods : Locating infrared emissive objects : Measuring infrared radiation reflected from sample)
Patent 5291021: Positron computed tomography scanner
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : With or including a luminophor : With radiant energy source : Body scanner or camera : With positron source : With gaseous sample)
Patent 5291022: High efficiency infrared source
(RADIANT ENERGY : RADIANT ENERGY GENERATION AND SOURCES : With radiation modifying member : Ultraviolet or infrared source : Plural planar layer type)
Patent 5291023: Position detecting system utilizing a weight coefficient to determine a gravity center of light
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Controlling web, strand, strip, or sheet : Self-luminous target)
Patent 5291024: Method for determining the position and shape of a yarn fed to a textile machine
(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 5291025: In-line non-contact wafer boat inspection apparatus
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring position : Edge : With translucent material)
Patent 5291026: Method for measuring eccentricity
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Hoods, grating, baffles, diaphragms, masks : Gratings (moire fringes) : Rotary motion)
Patent 5291027: Optical identification multiple diffraction grating mark member and card using the same
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Including coded record : End illuminated light conductor with noncircular geometric cross section)
Patent 5291028: Optical device for sensing marks on a surface using green light impinging at least sixty-five degrees to the normal
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Including coded record : Digital information : Fluid coupling)
Patent 5291029: Apparatus for measuring paper web properties while in situ of the paper machine with air jet stabilization
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Array or matrix)
Patent 5291030: Optoelectronic detector for chemical reactions
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Fluent material in optical path : Digital information)
Patent 5291031: Optical phase difference range determination in liquid level sensor
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Fluent material in optical path : Volume or level : Tape, drum, or disc types)
Patent 5291032: Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Fluent material in optical path : Volume or level : Tape, drum, or disc types)
Patent 5291033: Semiconductor light-emitting device having substantially planar surfaces
(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 : Incoherent light emitter :)
Patent 5291034: Non-linear quantum dot optical device
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : THIN ACTIVE PHYSICAL LAYER WHICH IS (1) AN ACTIVE POTENTIAL WELL LAYER THIN ENOUGH TO ESTABLISH DISCRETE QUANTUM ENERGY LEVELS OR (2) AN ACTIVE BARRIER LAYER THIN ENOUGH TO PERMIT QUANTUM MECHANICAL TUNNELING OR (3) AN ACTIVE LAYER THIN ENOUGH TO PERMIT CARRIER TRANSMISSION WITH SUBSTANTIALLY NO SCATTERING (E.G., SUPERLATTICE QUANTUM WELL, OR BALLISTIC TRANSPORT DEVICE) : Heterojunction : Quantum well : Superlattice : With particular barrier dimension :)
Patent 5291035: Microelectronic superconducting crossover and coil
(SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS : HIGH TEMPERATURE (TC GREATER THAN 30 K) DEVICES, SYSTEMS, APPARATUS, COM- PONENTS, OR STOCK, OR PROCESSES OF USING : Measuring or testing system or device : Magnetic field sensing system or device (e.g., SQUID, etc.) :)
Patent 5291036: Amorphous silicon sensor
(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 5291037: Light-emitting device
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INCOHERENT LIGHT EMITTER STRUCTURE : II-VI compound)
Patent 5291038: Reflective type photointerrupter
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INCOHERENT LIGHT EMITTER STRUCTURE : In combination with or also constituting light responsive device : With specific housing or contact structure : Discrete light emitting and light responsive devices : High temperature (i.e., >30o Kelvin))
Patent 5291039: LED head having heat radiating mount
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INCOHERENT LIGHT EMITTER STRUCTURE : With housing or contact structure : Plural heterojunctions in same device)
Patent 5291040: Deactivatable thyristor with turn-off current path
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : REGENERATIVE TYPE SWITCHING DEVICE (E.G., SCR, COMFET, THYRISTOR) : Combined with field effect transistor : Switching speed enhancement means)
Patent 5291041: AlGaAs/GaAs thyristor
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HETEROJUNCTION DEVICE : Light responsive structure : With large area flexible electrodes in press contact with opposite sides of active semiconductor chip and surrounded by an insulating element, (e.g., ring))
Patent 5291042: Multi-stage amplifier device and method for producing the same
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Junction field effect transistor (unipolar transistor) : With Schottky gate : Gate closely aligned to source region : With capacitive or inductive elements)
Patent 5291043: Semiconductor integrated circuit device having gate array
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : GATE ARRAYS : With particular signal path connections : Particular layout of complementary FETs with regard to each other)
Patent 5291044: Image sensor with continuous time photodiode
(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.) : Having structure to improve output signal (e.g., exposure control structure) : With blooming suppression structure : Si x Ge 1-x)
Patent 5291045: Non-volatile semiconductor memory device using a differential cell in a memory cell
(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) : Imaging array)
Patent 5291046: Semiconductor memory device
(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 capacitor electrodes connection portion located centrally thereof (e.g., fin electrodes with central post))
Patent 5291047: Floating gate type electrically programmable read only memory cell with variable threshold level in erased state
(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 : Additional control electrode is doped region in semiconductor substrate :)
Patent 5291048: Non-volatile storage device with impurities in nitride toward source side
(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) : Multiple insulator layers (e.g., MNOS structure) : Non-homogeneous composition insulator layer (e.g., graded composition layer or layer with inclusions) : With charging or discharging by control voltage applied to source or drain region (e.g., by avalanche breakdown of drain junction))
Patent 5291049: Mosfet with buried element isolation regions
(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 5291050: MOS device having reduced gate-to-drain capacitance
(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) : With means (other than self-alignment of the gate electrode) to decrease gate capacitance (e.g., shield electrode) : With complementary field effect transistor)
Patent 5291051: ESD protection for inputs requiring operation beyond supply voltages
(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 : Protection device includes insulated gate transistor structure (e.g., combined with resistor element) : Including resistor element)
Patent 5291052: CMOS semiconductor device with (LDD) NMOS and single drain PMOS
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : FIELD EFFECT DEVICE : Having insulated electrode (e.g., MOSFET, MOS diode) : Insulated gate field effect transistor in integrated circuit : Complementary insulated gate field effect transistors : Including resistor element)
Patent 5291053: Semiconductor device having an overlapping memory cell
(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 transistor adapted to function as load element for switching insulated gate field effect transistor : Selected groups of complete field effect devices having different threshold voltages (e.g., different channel dopant concentrations))
Patent 5291054: Light receiving module for converting light signal to electric signal
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS) : Electromagnetic or particle radiation : Light : With housing or encapsulation : With thinned central active portion of semiconductor surrounded by thick insensitive portion (e.g. diaphragm type strain gauge))
Patent 5291055: Resonant infrared detector with substantially unit quantum efficiency
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS) : Electromagnetic or particle radiation : Light : With means for increasing light absorption (e.g., redirection of unabsorbed light) : Antireflection coating : Combined with heavily doped channel stop portion)
Patent 5291056: Electronic switch comprising a photosensitive semiconductor
(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 : Narrow band gap semiconductor (<<1eV) (e.g., PbSnTe) : II-VI compound semiconductor (e.g., HgCdTe) : Combined with heavily doped channel stop portion)
Patent 5291057: Rectangular shaped laser diode and symmetrically inverted triangular shaped emitting and receiving photodiodes on the same substrate
(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 : External physical configuration of semiconductor (e.g., mesas, grooves) : Geometric configuration of junction (e.g., fingers))
Patent 5291058: Semiconductor device silicon via fill formed in multiple dielectric layers
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : WITH MEANS TO CONTROL SURFACE EFFECTS : Insulating coating : Multiple layers : At least one layer of silicon nitride : Combined with glass layer : With polycrystalline connecting region (e.g., polysilicon base contact))
Patent 5291059: Resin-molded semiconductor device and lead frame employed for fabricating the same
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : LEAD FRAME : On integrated circuit)
Patent 5291060: Lead frame and semiconductor device using same
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : LEAD FRAME : With dam or vent for encapsulant : Details of insulating layer electrical charge (e.g., negative insulator layer charge))
Patent 5291061: Multi-chip stacked devices
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : Multiple housings : Stacked arrangement : Combined with channel stop region in semiconductor)
Patent 5291062: Area array semiconductor device having a lid with functional contacts
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : With contact or lead : With specific electrical feedthrough structure : External connection to housing)
Patent 5291063: High-power RF device with heat spreader bushing
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : With provision for cooling the housing or its contents : With raised portion of base for mounting semiconductor chip)
Patent 5291064: Package structure for semiconductor device having a flexible wiring circuit member spaced from the package casing
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : With provision for cooling the housing or its contents : Liquid coolant : Directly attached to semiconductor device)
Patent 5291065: Semiconductor device and method of fabricating semiconductor device
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HOUSING OR PACKAGE : For plural devices : With gas coolant)
Patent 5291066: Moisture-proof electrical circuit high density interconnect module and method for making same
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : COMBINED WITH ELECTRICAL CONTACT OR LEAD : Of specified material other than unalloyed aluminum : Layered : Plural layers of specified contact or lead material)
Patent 5291067: Electric circuit system for motorcycle
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : VEHICLE MOUNTED SYSTEMS : Different voltages)
Patent 5291068: Touch sensitive switching apparatus
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Selectively actuated)
Patent 5291069: Bipolar H write driver
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : GATING (I.E., SWITCHING INPUT TO OUTPUT) : Utilizing three or more electrode solid-state device : Bipolar transistor : Plural : Multiple collector transistor)
Patent 5291070: Microprocessor synchronous timing system
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Synchronizing : With amplitude control)
Patent 5291071: High speed, low power output circuit with temperature compensated noise control
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Current driver : Having digital device (e.g., logic gate, flip-flop, etc.))
Patent 5291072: Crosstalk-reduced transmission device
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM : Integrated structure : With specific layout or layout interconnections : With field-effect transistor)
Patent 5291073: Thermal power sensor
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : EXTERNAL EFFECT : Temperature : Utilizing Hall effect)
Patent 5291074: BiCMOS track and hold amplifier
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By amplitude : Including details of sampling or holding : Sample and hold : With differential amplifier : Cross-coupled)
Patent 5291075: Fault detection circuit
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Bipolar transistor)
Patent 5291076: Decoder/comparator and method of operation
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : EXCLUSIVE FUNCTION (E.G., EXCLUSIVE OR, ETC.) : Field-effect transistor)
Patent 5291077: Semiconductor logical FET device
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : FUNCTION OF AND, OR, NAND, NOR, OR NOT : Field-effect transistor (e.g., JFET, etc.) : Bi-CMOS)
Patent 5291078: Gate circuits in transition detection input buffers
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : FUNCTION OF AND, OR, NAND, NOR, OR NOT : Field-effect transistor (e.g., JFET, etc.) : MOSFET (i.e., metal-oxide semiconductor field-effect transistor) : Diode transistor logic)
Patent 5291079: Configuration control unit for programming a field programmable gate array and reading array status
(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 5291080: Integrated circuit device having tristate input buffer for reducing internal power use
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Amplitude control : Interstage coupling (e.g., level shift, etc.) : With feedback)
Patent 5291081: Apparatus for detection of non-modulated signal and frequency acquisition
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By frequency : Frequency detection : Including plural frequency detection)
Patent 5291082: Low loss power switch
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : GATING (I.E., SWITCHING INPUT TO OUTPUT) : Utilizing three or more electrode solid-state device : Bipolar transistor : Special four or more electrode device (e.g., multiple bases, three electrode bipolar with FET gate, etc.) : SCR and bipolar transistor)
Patent 5291083: Bucket brigade analog delay line with voltage limiting feedback
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Having specific delay in producing output waveform : Including delay line or charge transfer device : Having specific passive circuit element or structure (e.g., RLC circuit, etc.))
Patent 5291084: Stepping motor having at least one set of asymmetric stator pole teeth
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Magnetic motors : Step-by-step : Successively energized solenoid coils)
Patent 5291085: Split-phase starter for an electric motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Electric circuit elements : Temperature, current-responsive, i.e., protectors : Distributor or timer (e.g., ignition magnetos))
Patent 5291086: Electrical actuator for valve or other device
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Drive mechanism : Motion conversion : Distributor or timer (e.g., ignition magnetos))
Patent 5291087: Sealed electric motor assembly
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Mechanical shields or protectors : Shield in air gap : Impulse coupling)
Patent 5291088: Electric motor with watertight construction
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Mechanical shields or protectors : Dirt, moisture or explosion proof : Impulse coupling)
Patent 5291089: Low drag/high feed rate bearing wick for a unit bearing motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Bearing or air-gap adjustment or bearing lubrication : Housings, windows or covers)
Patent 5291090: Curvilinear interleaved longitudinal-mode ultrasound transducers
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : With mechanical energy coupling means : Acoustic wave type generator or receiver : Plural elements)
Patent 5291091: Electrodeless low-pressure discharge
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH MAGNETIC DEVICE : With envelope : Gas or vapor type : Pole pieces facing electrode ends)
Patent 5291092: HID vehicle headlamp capsule assembly
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH ENVELOPE : Having base and connector : Plural interelectrode discharge spaces)
Patent 5291093: Inline type electron gun for color cathode ray tubes
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Plural beam generating or control : With focusing and accelerating electrodes : With studs)
Patent 5291094: Multi-focusing type electron gun for color cathode ray tubes
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Plural beam generating or control : With focusing and accelerating electrodes : With studs)
Patent 5291095: Cathode ray tube comprising an electron gun having a plane-parallel optical system
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Plural beam generating or control : With electrode support : Including non-planar elements)
Patent 5291096: Cathode structure for a cathode-ray tube
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Ray generating or control : Including cathode assembly : Internal)
Patent 5291097: Cathode-ray tube
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Envelope : With external optical element : Light conducting fiber or rod)
Patent 5291098: Light emitting device
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : Solid-state type : Plural layers : Organic phosphor)
Patent 5291099: Neon sign power supply circuit with automatic power interruption
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : WITH AUTOMATIC SHUNT AND/OR CUTOUT : Load device circuit controlled by the temperature modifying medium)
Patent 5291100: Low watt metal halide lamp apparatus
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : WITH SIGNAL, INDICATOR, OR ALARM : Electrically operated switch controlling the signal circuit : Selective indication of the load device)
Patent 5291101: Electronic ballast for a discharge lamp with current sensing
(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 5291102: Dynamic color separation display
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With additional control of cathode ray : Intensity control of ray : For television)
Patent 5291103: System for controlling power windows of vehicles
(ELECTRICITY: MOTIVE POWER SYSTEMS : WITH PARTICULAR MOTOR-DRIVEN LOAD DEVICE : Manual driving means)
Patent 5291104: DC commutatorless motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS : Field circuit control)
Patent 5291105: Control circuit for a half-wave brushless motor with a surge limiter
(ELECTRICITY: MOTIVE POWER SYSTEMS : SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS : Field circuit control)
Patent 5291106: Single current regulator for controlled motoring and braking of a DC-fed electric motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : BRAKING : Dynamic braking : Energy flow interrupted when motor stops)
Patent 5291107: Circuit for driving reel motor of videotape recorder
(ELECTRICITY: MOTIVE POWER SYSTEMS : CONSTANT MOTOR CURRENT, LOAD AND/OR TORQUE CONTROL : Initial, "cracking" or "starting from rest" torque control)
Patent 5291108: Method of equalizing the torque on a drive of a pilger rolling mill
(ELECTRICITY: MOTIVE POWER SYSTEMS : CONSTANT MOTOR CURRENT, LOAD AND/OR TORQUE CONTROL : Control of motor load or device driven : Locally closed armature circuit)
Patent 5291109: Windshield wiper system
(ELECTRICITY: MOTIVE POWER SYSTEMS : PERIODIC, REPETITIOUS OR SUCCESSIVE OPERATIONS CONTROL OF MOTOR, INCLUDING "JOG" AND "INCH" CONTROL : Different voltages)
Patent 5291110: Low acoustic noise seeking method and apparatus
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Power- or motion-transmitting mechanism)
Patent 5291111: Drive controller and drive control method for a stepping motor without a step out error
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : With protective or reliability increasing features (e.g., "fail-safe" systems) : Mechanical gearing)
Patent 5291112: Positioning apparatus and movement sensor
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Program- or pattern-controlled systems : With program recording or composing means : Gearing)
Patent 5291113: Servo coupled hand controllers
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Vehicular guidance systems with single axis control : Altitude or pitch control : Multiple pass systems)
Patent 5291114: Method of and apparatus for controlling a sheet feeding motor used in a printer
(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 5291115: Method and apparatus for sensing the rotor position of a switched reluctance motor without a shaft position sensor
(ELECTRICITY: MOTIVE POWER SYSTEMS : SYNCHRONOUS MOTOR SYSTEMS : Hysteresis or reluctance motor systems : Cyclically varying or repeated speed schedules)
Patent 5291116: Apparatus for charging alkaline zinc-manganese dioxide cells
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : SERIALLY CONNECTED BATTERIES OR CELLS : With individual charging of plural batteries or cells : With charger stand or base)
Patent 5291117: Method and an apparatus for charging a battery
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL CHARGING : Pulsed : With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.))
Patent 5291118: Device for detecting connection or disconnection of a battery to an electric charger
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL CHARGING : With thermal condition detection : Hysteresis type (e.g., antichattering, etc.))
Patent 5291119: Low distortion alternating current output active power factor correction circuit using two bi-directional switching regulations
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : FOR REACTIVE POWER CONTROL : Using converter :)
Patent 5291120: Method and apparatus for symmetrically modulating a controlled series compensation system
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : FOR REACTIVE POWER CONTROL : Using impedance : Switched impedance :)
Patent 5291121: Rail splitting virtual ground generator for single supply systems
(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 : To derive a voltage reference (e.g., band gap regulator) : Including a ferrocapacitor across a tertiary winding)
Patent 5291122: Bandgap voltage reference circuit and method with low TCR resistor in parallel with high TCR and in series with low TCR portions of tail
(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 : To derive a voltage reference (e.g., band gap regulator) : Including a ferrocapacitor across a tertiary winding)
Patent 5291123: Precision reference current generator
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : INCLUDING AN IMPEDANCE : Thermistor or resistor : Resistor only)
Patent 5291124: Tester for high voltage measuring apparatus
(ELECTRICITY: MEASURING AND TESTING : TESTING POTENTIAL IN SPECIFIC ENVIRONMENT (E.G., LIGHTNING STROKE) : Voltage probe : Mechanically actuated switch)
Patent 5291125: Instantaneous frequency measurement (IFM) receiver with two signal capability
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Analysis of complex waves : Frequency spectrum analyzer : Real-time spectrum analyzer : High voltage speed signal type)
Patent 5291126: Pulse width modulation driving circuit for a cross coil meter
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : With electromagnetic field (e.g., dynamometer) : Ratio)
Patent 5291127: Chip-lifetime testing instrument for semiconductor devices
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Probe contact enhancement : Of reflected test signal)
Patent 5291128: Motor testing apparatus utilizing inertial loading
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Motor or generator fault tests : With barrier layer)
Patent 5291129: Contact probe
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Probe contact enhancement : Of reflected test signal)
Patent 5291130: Vehicle wheel speed sensor employing an adaptable rotor cap
(ELECTRICITY: MEASURING AND TESTING : ELECTRICAL SPEED MEASURING : Including speed-related frequency generator : Including magnetic detector : Permanent magnet type : High voltage speed signal type)
Patent 5291131: Apparatus for measuring elongation of a circulating chain
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Movable random length material measurement : Using thermionic emission)
Patent 5291133: Multi-bit encoder signal conditioning circuit having common mode disturbance compensation
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Displacement : Rotary : Magnetoresistive)
Patent 5291134: Erase head positioning method
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetic information storage element testing : Dynamic information element testing : Magnetoresistive)
Patent 5291135: Weak magnetic field measuring system using dc-SQUID magnetometer with bias current adjustment and/or detecting function of abnormal operation
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetometers : Superconductive magnetometers : Plural sensors)
Patent 5291136: Variable angle eddy current probe
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetic test structure elements : With support for article)
Patent 5291137: Processing method and apparatus for processing spin echo in-phase and quadrature amplitudes from a pulsed nuclear magnetism tool and
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using well logging device : To determine direction)
Patent 5291138: Rotating frame imaging system
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using a nuclear resonance spectrometer system : To obtain localized resonance within a sample :)
Patent 5291139: Circuit for detection of the state of an integrated circuit fuse in a balanced fuse configuration
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Fuse : Transformer)
Patent 5291140: Mixed domain spectrum measurement method
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Parameter related to the reproduction or fidelity of a signal affected by a circuit under test : Transfer function type characteristics : Signal to noise ratio or noise figure)
Patent 5291141: Method for continuously measuring delay margins in digital systems
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Parameter related to the reproduction or fidelity of a signal affected by a circuit under test : Transfer function type characteristics : Response time or phase delay : Field effect transistor)
Patent 5291142: Method and apparatus for measuring the resistance of conductive materials due to electromigration
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using resistance or conductance measurement : With semiconductor or IC materials quality determination using conductivity effects : Including a particular probing technique (e.g., four point probe))
Patent 5291143: Modulator with improved damping
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Electromagnetic pulse forming : Limiting, clipping, or clamping)
Patent 5291144: Phase-locked circuit capable of being quickly put in a phase-locked state
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Synchronizing : With feedback : Phase lock loop : Phase lock loop)
Patent 5291145: Microwave processing equipment
(AMPLIFIERS : WITH MASER-TYPE AMPLIFYING DEVICE : With process control system)
Patent 5291146: Transverse traveling wave amplifier
(AMPLIFIERS : WITH TRAVELING WAVE-TYPE TUBE : Including plural stages cascaded)
Patent 5291147: Power booster for a radio telephone
(AMPLIFIERS : WITH CONTROL OF POWER SUPPLY OR BIAS VOLTAGE : With control of input electrode or gain control electrode bias : Bias control signal from input of amplifier : A feedback to input of a prior stage)
Patent 5291148: Gain linearization with coplanar waveguide
(AMPLIFIERS : HUM OR NOISE OR DISTORTION BUCKING INTRODUCED INTO SIGNAL CHANNEL : Electron tube or diode as impedance)
Patent 5291149: Operational amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having push-pull amplifier stage :)
Patent 5291150: Control circuitry for an RF signal amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including gain control means : And significant control voltage developing means : To eliminate crossover distortion)
Patent 5291151: Sensor amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including gain control means : Having feedback means acting as variable impedance : With time constant means)
Patent 5291152: Proximity switch having oscillator inductively coupled through pulsed Faraday shield to resonant target
(OSCILLATORS : WITH DEVICE RESPONSIVE TO EXTERNAL PHYSICAL CONDITION : Plural outputs of diverse wave form)
Patent 5291153: Oscillating MMIC circuit with dielectric resonator
(OSCILLATORS : WITH DISTRIBUTED PARAMETER RESONATOR : Parallel wire type : Disk seal tube (e.g., lighthouse, pencil tube))
Patent 5291154: Synchronous single cycle sample and control amplitude modulator
(MODULATORS : AMPLITUDE MODULATOR : Including electron discharge device)
Patent 5291155: Microwave buffer
(WAVE TRANSMISSION LINES AND NETWORKS : PLURAL CHANNEL SYSTEMS :)
Patent 5291156: Method and apparatus for imparting positive phase slope to a narrowband signal
(WAVE TRANSMISSION LINES AND NETWORKS : WAVE-SHAPING : With control of equalizer and/or delay network)
Patent 5291157: Low parasitic capacitance superconductor circuit node
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : With impedance matching : Having long line elements : Having plural concentric helices)
Patent 5291158: High frequency filter having common coupling rods fixedly mounted and coupled through a common wall
(WAVE TRANSMISSION LINES AND NETWORKS : PLURAL CHANNEL SYSTEMS : Having branched circuits : With impedance matching : Including long line element : For providing frequency separation : For TEM lines)
Patent 5291159: Acoustic resonator filter with electrically variable center frequency and bandwidth
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Electromechanical filter : Using bulk mode piezoelectric vibrator : With means for varying response : Resiliently mounted components)
Patent 5291160: Filter arrangement including a non-reversible circuit element, a band-pass filter, and an active circuit
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Magnetostrictive wave transmission path)
Patent 5291161: Microwave band-pass filter having frequency characteristic of insertion loss steeply increasing on one outside of pass-band
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Stripline or microstrip : Plural mechanically coupled disk resonators)
Patent 5291162: Method of adjusting frequency response in a microwave strip-line filter device
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Stripline or microstrip : Tunable : Monolithic structure)
Patent 5291163: YIG sphere positioning apparatus
(WAVE TRANSMISSION LINES AND NETWORKS : RESONATORS (DISTRIBUTED PARAMETER TYPE) : Magnetic type : Providing negative resistance)
Patent 5291164: Radiating high frequency line
(WAVE TRANSMISSION LINES AND NETWORKS : LONG LINES : Leaky lines : With tuning)
Patent 5291165: Insulating barriers for circuit breaker bus bars and a ground fault circuit breaker incorporating same
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : Automatic circuit-interrupting devices (e.g., circuit-protective devices) : Responsive to predetermined or abnormal current condition (e.g., direction, phase angle or amplitude) : Magnetic or electrodynamic (e.g., blowon or blowoff))
Patent 5291166: Electromagnetic relay with resistor and method for manufacturing the same
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : Polarity-responsive : With locking, latch or tripping structure)
Patent 5291167: Arc extinguishing device having a focused field
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : With arc-suppression or extinguishing means : Pivoted or relatively movable independently of the armature)
Patent 5291168: Connector cooling and protection for power coupling assembly for superconducting magnets
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Superconductive type : With coil structure)
Patent 5291169: Open architecture magnetic resonance imaging superconducting magnet assembly
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Superconductive type : With coil structure)
Patent 5291170: Electromagnetic actuator with response time calibration
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : With magneto-mechanical motive device (e.g., electromagnet with armature) : Alternating current type : Flux phase displacement or varying means : Plural winding type : With armature-locking means)
Patent 5291171: Magnet apparatus suitable for magnetic resonance imaging
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Magnet structure or material : Permanent magnets : Plural magnets : With outer casing or housing)
Patent 5291172: Noise absorber
(INDUCTOR DEVICES : WITH MOUNTING OR SUPPORTING MEANS (E.G., BASE) : Hollow conductor coil)
Patent 5291173: Z-foldable secondary winding for a low-profile, multi-pole transformer
(INDUCTOR DEVICES : WINDING FORMED OF PLURAL COILS (SERIES OR PARALLEL) : Two windings (e.g., transformer) : Coils of different windings interposed : Angularly movable)
Patent 5291174: Ceramic substrate blower motor resistor array
(ELECTRICAL RESISTORS : RESISTANCE VALUE RESPONSIVE TO A CONDITION : Current and/or voltage (e.g., ballast resistor) : Indirectly heated : Semiconductor)
Patent 5291175: Limiting heat flow in planar, high-density power resistors
(ELECTRICAL RESISTORS : WITH HEAT-STORING : Ventilated helical or zigzag element)
Patent 5291176: Slide type variable resistor
(ELECTRICAL RESISTORS : MECHANICALLY VARIABLE (E.G., RHEOSTAT) : Movable contact electrically adjustable over length of resistance element : Unitary movable contact electrically bridges plural resistance elements : Plural elements and plural contacts)
Patent 5291177: Variable resistor
(ELECTRICAL RESISTORS : MECHANICALLY VARIABLE (E.G., RHEOSTAT) : Movable contact electrically adjustable over length of resistance element : Contact slides along in contact with element : Contact angularly slidable : With removable actuating shaft or key :)
Patent 5291178: Film-type resistor assembly with full encapsulation except at the bottom surface
(ELECTRICAL RESISTORS : INCASED, EMBEDDED, OR HOUSED : Carbon particles)
Patent 5291179: Printed circuit board
(ELECTRICAL RESISTORS : WITH BASE EXTENDING ALONG RESISTANCE ELEMENT : Resistance element and/or terminals printed or marked on base : Element extends in or through openings or grooves in frame or support)
Patent 5291180: LC structure useful in radio frequency security systems
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Article placement or removal (e.g., anti-theft) : Detectable device on protected article (e.g., "tag") : Having tuned resonant circuit : Fence)
Patent 5291181: Wet bed alarm and temperature monitoring system
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Human or animal : Water safety alarm : Specified device housing or attachment means)
Patent 5291182: Fluid flow direction detector
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Fluent material : Flow rate : Vane in flow path : Having means locking device to article)
Patent 5291183: Multi-functional alarming system
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specified indicator structure : Sound reproducer : Diverse)
Patent 5291184: Head up display for a vehicle having a liquid crystal indicator and a reflecting prism
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : IMAGE SUPERPOSITION BY OPTICAL MEANS (E.G., HEADS-UP DISPLAY) : Three-dimensional arrays)
Patent 5291185: Image display device
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graphic manipulation (object processing or display attributes) : Merge or overlay : Image based : Character and graphics : Plural look up tables)
Patent 5291186: Method and apparatus for minimizing the visual degradation of digital typefaces-diagonal adjustment
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Character generating : Alteration of stored font : Scaling : Scrolling)
Patent 5291187: High-speed video display system
(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) : Fluid light emitter (e.g., gas, liquid, or plasma) : Having endless belt or tape reader)
Patent 5291188: Method and apparatus for allocating off-screen display memory
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM : Memory allocation : Unified memory architecture (e.g., UMA))
Patent 5291189: Direct memory access apparatus in image processing system and external storage device used therein
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM : Addressing : Mask data operation)
Patent 5291190: Operator interface for plant component control system
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Monitoring in addition to control (e.g., supervisory) : Including storage or recording : Storage at controller : Step-by-step)
Patent 5291191: Medicine dispenser
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Intelligence comparison for controlling : Commodity (e.g., vending) : Including merchandise information display system (e.g., store price display) : Password)
Patent 5291192: Paging system and its operating method with repeated transmission
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Having indication or alarm (e.g., location indication) : Code responsive (i.e., paging) : Alert : Audible)
Patent 5291193: Identification registration for a wireless transmission-reception control system
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Pulse responsive actuation : Serial : Radio link : Counting chain)
Patent 5291194: Apparatus for interconnecting an underwater vehicle and a free-floating pod
(COMMUNICATIONS: ELECTRICAL : UNDERWATER :)
Patent 5291195: Target light for docking
(COMMUNICATIONS: ELECTRICAL : AIRCRAFT ALARM OR INDICATING SYSTEMS : Docking guidance : Particular energy guide source (e.g., sound, electric field, radio))
Patent 5291196: Collision-avoidance method for cooperating carriers and onboard optical assembly designed for its implementation
(COMMUNICATIONS: ELECTRICAL : AIRCRAFT ALARM OR INDICATING SYSTEMS : Potential collision with other aircraft : Particular energy guide source (e.g., sound, electric field, radio))
Patent 5291197: One-chip data processor with built-in A/D converter for automatically repeating A/D conversions without instructions from a CPU
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Multiplex : Linearization (e.g., nonlinear transfer characteristic compensates for nonlinear transducer))
Patent 5291198: Averaging flash analog-to-digital converter
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Analog input compared with static reference : Parallel type :)
Patent 5291199: Threat signal detection system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR EW (ELECTRONIC WARFARE) : Chaff)
Patent 5291200: Method for measuring frequency modulation rate characteristics for a swept frequency signal
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR EW (ELECTRONIC WARFARE) : Chaff)
Patent 5291201: Microwave integrated circuit frequency translating apparatus
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR EW (ELECTRONIC WARFARE) : ECM (Electronic countermeasures, i.e., jamming) : Decoy or tow target)
Patent 5291202: Noise radars
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR EW (ELECTRONIC WARFARE) : ECCM (Electronic counter-countermeasures, i.e., antijamming) : With repeater)
Patent 5291203: Radar detection helmet
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR EW (ELECTRONIC WARFARE) : Detection of surveilance : Radar reacts to jamming)
Patent 5291204: Radar response system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Unique identity : With defruiting or degarbling)
Patent 5291205: Radio frequency automatic identification system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Unique identity : With defruiting or degarbling)
Patent 5291206: Multiple target discrimination system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RETURN SIGNAL CONTROLS EXTERNAL DEVICE : Missile or spacecraft guidance : Distance measuring equipment (DME))
Patent 5291207: Method for estimating position of objective obstacle for vehicle
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RETURN SIGNAL CONTROLS EXTERNAL DEVICE : Radar mounted on and controls land vehicle : With terrain avoidance or alarm)
Patent 5291208: Incipient lightning detection and device protection
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : WITH PARTICULAR CIRCUIT : For receiver protection : With video quantizer)
Patent 5291209: Coherent side lobe canceler
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Utilizing correlation techniques : Side lobe elimination : Difference of each antenna channel signal : Satellite selection (i.e., tracking or acquisition))
Patent 5291210: Flat-plate antenna with strip line resonator having capacitance for impedance matching the feeder
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Microstrip : Reflector or director)
Patent 5291211: A radar antenna system with variable vertical mounting diameter
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With support for antenna, reflector or director : Antenna on post, standard or tower : Rod retractible into support)
Patent 5291212: Grid-type paraboloidal microwave antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Antenna with parasitic reflector : Parabolic-type reflector with active antenna at focus : Including a screening reflector)
Patent 5291213: Pen-type computer input device with multiple spheres
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Stylus : With alignment or calibration capability (i.e., parallax problem))
Patent 5291214: Method and apparatus for scanning a receiving medium
(RECORDERS : MARKERS AND/OR DRIVING MEANS THEREFOR : Lead-screw drive means : Hand time stamps)
Patent 5291215: Ink jet recording apparatus with a thermally stable ink jet recording head
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Of temperature or pressure of device or component thereof : With particular cooling means : Full-line array)
Patent 5291216: Multi-trace chart recorder
(RECORDERS : PLURAL-FUNCTION RECORDER, DISTINGUISHABLE RECORDINGS : Records distinguishable by color : And indicator or alarm)
Patent 5291217: Method and apparatus for producing thermal slide transparencies
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Including tensioning means)
Patent 5291218: Spacer rails for laser dye transfer transparencies
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Record receiver and transfer medium feeding or driving means : Including separating means : With means for driving or supplying current to the resistive heating elements)
Patent 5291219: Thermal transfer recording apparatus having preheating
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Preheating : Look up table)
Patent 5291220: Thermal printer with image signal processing
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Multicolor : Housing or mounting)
Patent 5291221: Method and apparatus for the calibration of a multichannel printer
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Synchronization of light with medium : Including switching means)
Patent 5291222: Image exposure apparatus
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Synchronization of light with medium : Housing or mounting)
Patent 5291223: Exposure unit for a multicolor image forming apparatus capable of better registration of the multicolor images
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Multicolor : Registration : With carrier)
Patent 5291224: Sheet feeding apparatus using pairs of spur rollers
(RECORDERS : RECORD RECEIVERS AND/OR DRIVING MEANS THEREFOR : Receiver, only movable during recording)
Patent 5291225: Device for determining paper size based on time data
(RECORDERS : RECORD RECEIVERS AND/OR DRIVING MEANS THEREFOR : Receiver, only movable during recording)
Patent 5291226: Nozzle member including ink flow channels
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With thermal force ejection : Composite ejector : Resistor specifics)
Patent 5291227: Ink jet printer having improved paper transport mechanism
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Medium and processing means : Physical handling : Ink)
Patent 5291228: Image formation apparatus having tuck prevention control means
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : With medium for receiving an image or feeding means therefor : Using recording head to selectively charge toner)
Patent 5291229: Adjustable telescope alignment apparatus for use with a carrier lens
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : With auxiliary lenses movable in and out of the optical path (e.g., clip-on type attachments) : Detachably secured)
Patent 5291230: Ophthalmic device includes a detachable nosepiece
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : Continuous rim mounting : Nose guards or pads removable or adjustable : Fluid-filled or suction type)
Patent 5291231: Opthalmological image processing system
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Including eye photography : Having means to detect proper distance or alignment (i.e., eye to instrument) :)
Patent 5291232: Device for controlling an operation of a movable member
(PHOTOGRAPHY : HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE : Power zoom : Having position sensor : Focus position adjusted according to focal length)
Patent 5291233: Camera having an auto zoom function
(PHOTOGRAPHY : PSEUDO ZOOM : Camera release)
Patent 5291234: Auto optical focus detecting device and eye direction detecting optical system
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Lens characteristic compensating : Having position sensor)
Patent 5291235: Automatic focusing device
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having pursuit mode : With mechanical rangefinder)
Patent 5291236: Camera
(PHOTOGRAPHY : HAVING OPERATOR CONTROLLED DATA ENTRY INTO CAMERA : Having display in viewfinder)
Patent 5291237: Flash synchronizing device
(PHOTOGRAPHY : EXPOSURE CONTROL SYSTEM RESPONSIVE TO DISTANCE : Electric distance signal : And means to move film)
Patent 5291238: Photometering circuit
(PHOTOGRAPHY : EXPOSURE CONTROL CIRCUIT : Having log transformation circuit : Plural blades)
Patent 5291239: System and method for leveling semiconductor wafers
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Step and repeat : Reflector between original and photo-sensitive paper)
Patent 5291240: Nonlinearity-compensated large-area patterning system
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Step and repeat : Reflector between original and photo-sensitive paper)
Patent 5291241: Optical device
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Focus or magnification control : Reflector between original and photo-sensitive paper)
Patent 5291242: Gear arrangement for development unit of imaging device
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Developing unit : Drum mount)
Patent 5291243: System for electronically printing plural-color tamper-resistant documents
(ELECTROPHOTOGRAPHY : COMBINED WITH DIVERSE SUBJECT MATTER : With diverse image formation : Electrostatic :)
Patent 5291244: Image forming apparatus communication system
(ELECTROPHOTOGRAPHY : REMOTE MONITORING : With diverse image formation)
Patent 5291245: Photoreceptor belt seam detection and process control
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of exposure : Having detection of toner (e.g., patch))
Patent 5291246: Electrophotographic printing machine
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Having overlayer : Film process head)
Patent 5291247: Image forming apparatus having a corona ventilating means
(ELECTROPHOTOGRAPHY : INTERNAL MACHINE ENVIRONMENT : Forced air circulation : Supplying power to charger)
Patent 5291248: LED carriage selectively movable in two directions
(ELECTROPHOTOGRAPHY : COMBINED WITH DIVERSE SUBJECT MATTER : With diverse image formation : Electrostatic : Light (e.g., laser, LED, LCD) :)
Patent 5291249: Light emitting diode printer
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Process cartridge unit : Having subunit separation : Toner cartridge)
Patent 5291250: Liquid-type developing apparatus including developing head having hermetic structure
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Liquid development : Sprayed : Fountain : Optical detector)
Patent 5291251: Image development and transfer apparatus which utilized an intermediate transfer film
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Having overlayer : Film process head)
Patent 5291252: Multicolor image forming apparatus with tension controlled image transfer belt
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Color : Registration : Having electrode)
Patent 5291253: Corona deterioration and moisture compensation for transfer unit in an electrophotographic apparatus
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of transfer : Concentration control)
Patent 5291254: Electrophotographic recording apparatus
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Of plural processes : Single detector for plural toners)
Patent 5291255: Imaging apparatus with straight path fixing
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Fixing (e.g., fusing) : By heat and pressure : Parting agent applicator)
Patent 5291256: Image forming apparatus having opening mechanism for jam clearance
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Fixing unit : New and waste toner container)
Patent 5291257: Composite pressure roll
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Fixing (e.g., fusing) : By heat and pressure : Heated roller : Composition or layers : Cyclically (e.g., with movement of copy))
Patent 5291258: Support ski for film cleaning device
(ELECTROPHOTOGRAPHY : CLEANING OF IMAGING SURFACE : Magnetic : Having forced air (e.g., vacuum))
Patent 5291259: Image forming apparatus having toner cleaning device
(ELECTROPHOTOGRAPHY : CLEANING OF IMAGING SURFACE : Magnetic : Having forced air (e.g., vacuum))
Patent 5291260: Image forming apparatus having a transfer drum with a vacuum sheet holding mechanism
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Color : Copy medium carrier (e.g., drum or belt) : Having gripper : Vacuum or pneumatic : By magnetic brush)
Patent 5291261: Optical object detection system incorporating fiber optic coupling
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : Triangulation ranging to a point with one projected beam : Using photodetection with a fixed axial line of sight :)
Patent 5291262: Laser surveying instrument
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : With photodetection : Of pulse transit time : Having pulse transmission trigger significance : Including optical pick-off of transmission start :)
Patent 5291263: Laser range finder using a nonlinear crystal
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : With photodetection : Using at least a pair of viewing axes)
Patent 5291264: Method and apparatus for the optical measurement of an angle between positions of components relative to each other
(OPTICS: MEASURING AND TESTING : ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT : Wheel alignment with photodetection : With photodetection of reflected beam angle with respect to a unidirectional source beam)
Patent 5291265: Off-axis cavity absorption cell
(OPTICS: MEASURING AND TESTING : SAMPLE, SPECIMEN, OR STANDARD HOLDER OR SUPPORT (E.G., PLATES OR SLIDES) : Fluid containers (e.g., cells or cuvettes) : Light intensity)
Patent 5291266: Depolarized light source for fiber optic sensors
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Using fiber or waveguide interferometer : Lock-in prevention)
Patent 5291267: Optical low-coherence reflectometry using optical amplification
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Using fiber or waveguide interferometer : Having a short coherence length source : By dithering (suspensions, drives, flexures))
Patent 5291268: Method and apparatus for determining a path difference in a Michelson interferometer
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Spectroscopy : Having particular linear mirror drive or configuration : With diffraction grating means)
Patent 5291269: Apparatus and method for performing thin film layer thickness metrology on a thin film layer having shape deformations and local slope
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : For dimensional measurement : Thickness : Refraction from surfaces of different refractive index : Having wavefront division (e.g., by diffraction))
Patent 5291270: Method and arrangement for detecting edges and bores of a workpiece with an optical probe head
(OPTICS: MEASURING AND TESTING : SHAPE OR SURFACE CONFIGURATION : Triangulation : Wheel alignment)
Patent 5291271: Measurement of transparent container wall thickness
(OPTICS: MEASURING AND TESTING : DIMENSION : Thickness : Of light permeable material : Moire)
Patent 5291272: Method and apparatus for measuring dimensional variables of threaded pipe
(OPTICS: MEASURING AND TESTING : DIMENSION : Width or diameter : Shadow or beam blocking : Scanning : Quadrature detection)
Patent 5291273: Non-contact diameter measuring method and apparatus
(OPTICS: MEASURING AND TESTING : DIMENSION : Width or diameter : Of light permeable material)
|