Patents 5321335

Patents 5321335 - 5321605

Patent 5321335: Alumina, calcia, yttria sealing composition
(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 5321336: Electron gun device for controlling the potential of a body in space
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Plural concentrating, accelerating, and/or de-accelerating stages : Storage tubes)

Patent 5321337: Ballast having starting current restraint circuitry for preventing a large in-rush current and protection circuitry for preventing damage
(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 5321338: Lamp starting circuit
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : SURGE GENERATOR OR INDUCTANCE IN THE SUPPLY CIRCUIT : Circuit interrupter in the inductance circuit : Variable inductance)

Patent 5321339: Protection of cathode ray tubes
(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 5321340: Driving method for three-phase stepping motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : OPEN-LOOP STEPPING MOTOR CONTROL SYSTEMS : Having commutating switch-type transmitter)

Patent 5321341: Drive module for machine
(ELECTRICITY: MOTIVE POWER SYSTEMS : WITH PARTICULAR MOTOR-DRIVEN LOAD DEVICE : Power- or motion-transmitting mechanism : Plural, diverse or diversely controlled motors)

Patent 5321342: Two-phase brushless DC motor controller
(ELECTRICITY: MOTIVE POWER SYSTEMS : SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS : Field circuit control)

Patent 5321343: Digital motor control system
(ELECTRICITY: MOTIVE POWER SYSTEMS : SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS : Field circuit control)

Patent 5321344: Control circuit for model railroads
(ELECTRICITY: MOTIVE POWER SYSTEMS : MOTOR-REVERSING : Acceleration control)

Patent 5321345: Moisture activated sensor system
(ELECTRICITY: MOTIVE POWER SYSTEMS : AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING) : Moisture content or wetness : Voltage)

Patent 5321346: NC data creation method
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Program- or pattern-controlled systems : Digital or numerical systems : Contouring systems : With "feed-rate" control : Including display device)

Patent 5321347: Battery charger device and method
(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 5321348: Boost switching power conversion
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : IN SHUNT WITH SOURCE OR LOAD : Using choke and switch across source : In bridge)

Patent 5321349: Rechargeable/portable multi-voltage dc power supply
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using an impedance as the final control device : Plural selective resistors : With inductor in control circuit)

Patent 5321350: Fundamental frequency and period detector
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : By stroboscopic means)

Patent 5321351: Test fixture alignment system
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Probe alignment or positioning : Of reflected test signal)

Patent 5321352: Probe apparatus and method of alignment for the same
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Probe alignment or positioning : Of reflected test signal)

Patent 5321353: System and method for precisely positioning a robotic tool
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : Program- or pattern-controlled systems : With program recording or composing means : Multifunction manipulator (i.e., Robot) : Differential type)

Patent 5321354: Method for inspecting semiconductor devices
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Test of semiconductor device : Cantilever)

Patent 5321355: Hall Effect position sensor with flux limiter and magnetic dispersion means
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Displacement : Having particular sensor means : Hall effect : Electrically energized)

Patent 5321356: Magnetic inspection device for elongated objects and inspection method
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Magnetic test structure elements : With support for article)

Patent 5321357: Three-dimensional detection, dosimetry and imaging of an energy field by formation of a polymer in a gel
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE :)

Patent 5321358: Embedded NMR sensors for cure monitoring and control of composite structures
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE :)

Patent 5321359: Selective imaging among three or more chemical species
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using a nuclear resonance spectrometer system : Having particular optical cell structure)

Patent 5321360: Resonant cavities for NMR
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Electronic circuit elements : With homogeneity control)

Patent 5321361: Apparatus and method for detecting magnetically detectable plastic pipe and other sources of magnetic fields from a distance using a vertically
(ELECTRICITY: MEASURING AND TESTING : OF GEOPHYSICAL SURFACE OR SUBSURFACE IN SITU : For small object detection or location : To determine fluid entry)

Patent 5321362: Digital filtering of EL CID data
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of ground fault indication : Of electrically operated apparatus (power tool, appliance, machine, etc.) : Peak voltage type)

Patent 5321363: Two-terminal circuit element measuring apparatus for performing contact checks
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : For fault location : By voltage or current measuring : Of an applied test signal : Metal pellets or beads)

Patent 5321364: Network analyzer
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Calibration : Having a lamp or light indicator)

Patent 5321365: Reduced noise sensitivity in inverse scattering through filtering
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : With auxiliary means to condition stimulus/response signals : For excitation : Sheet material)

Patent 5321366: Capacitance sensor apparatus of divided multi-electrode type
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using capacitive type measurement : Where a material or object forms part of the dielectric being measured : To determine dimension (e.g., thickness or distance))

Patent 5321367: Circuit for measuring capacitance at high DC bias voltage
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using capacitive type measurement : Where a material or object forms part of the dielectric being measured : To determine dimension (e.g., thickness or distance))

Patent 5321368: Synchronized, digital sequential circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Particular stable state circuit (e.g., tristable, etc.) : Circuit having only two stable states (i.e., bistable) : Having at least two cross-coupling paths : D type input : Plural independent clock inputs (i.e., non complementary ))

Patent 5321369: Wide-range, wide-bandwidth, high-speed phase detector
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By phase : Comparison between plural inputs (e.g., phase angle indication, lead-lag discriminator, etc.) :)

Patent 5321370: Operational amplifier with common-mode feedback amplifier circuit
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having common mode rejection circuit :)

Patent 5321371: Current mirror with error correction
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including current mirror amplifier : Of diode type)

Patent 5321372: Apparatus and method for terminating cables to minimize emissions and susceptibility
(WAVE TRANSMISSION LINES AND NETWORKS : PLURAL CHANNEL SYSTEMS :)

Patent 5321373: Combined differential-mode common-mode noise filter
(WAVE TRANSMISSION LINES AND NETWORKS : TRANSMISSION LINE INDUCTIVE OR RADIATION INTERFERENCE REDUCTION SYSTEMS : Having branched circuits)

Patent 5321374: Transverse electromagnetic mode resonator
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Magnetostrictive wave transmission path)

Patent 5321375: RF crossover network
(WAVE TRANSMISSION LINES AND NETWORKS : LONG LINE ELEMENTS AND COMPONENTS : Strip type : Including spaced, electrically compensated, internal support means)

Patent 5321376: Tagging relay
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : Automatic circuit-interrupting devices (e.g., circuit-protective devices) : With switch condition signalling, indicating or alarm means : Magnetic or electrodynamic (e.g., blowon or blowoff))

Patent 5321377: Electromagnet for relays and contactor assemblies
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : Polarity-responsive : With locking, latch or tripping structure)

Patent 5321378: Molded case circuit breaker current transformer adapter unit
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : ELECTROMAGNETICALLY ACTUATED SWITCHES : With housing or support means : Pivoted or relatively movable independently of the armature)

Patent 5321379: Transformer with amorphous alloy core having chip containment means
(INDUCTOR DEVICES : WITH OUTER CASING OR HOUSING : Adjustable inductor)

Patent 5321380: Low profile printed circuit board
(INDUCTOR DEVICES : COILS OF SPECIAL CONFIGURATION : Planar type : Coils of different windings interposed)

Patent 5321381: Base for an electromechanical functional unit
(ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES : THERMALLY ACTUATED SWITCHES : With longitudinally expansible solid element : Housing, casing or support means : Diaphragm, strip or ribbon)

Patent 5321382: Thermal type flow rate sensor
(ELECTRICAL RESISTORS : WITH COOLING GAS OR LIQUID CIRCULATION : Granular, powdered, or transversely stacked resistance element)

Patent 5321383: Control system for a variable input device having a slider
(ELECTRICAL RESISTORS : MECHANICALLY VARIABLE (E.G., RHEOSTAT) : Movable contact electrically adjustable over length of resistance element : Contact operated by pedal or treadle : With knob mounting or enclosing the element)

Patent 5321384: Movable tap or wiper for potentiometers
(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 plural contact portions :)

Patent 5321385: Wiper for an electric rotary potentiometer
(ELECTRICAL RESISTORS : MOVABLE CONTACT STRUCTURE : With switch)

Patent 5321386: Resistor element
(ELECTRICAL RESISTORS : INCASED, EMBEDDED, OR HOUSED : Helical or wound element : Casing or housing formed on and hardened on resistor (e.g., molded) : Element coiled on a core)

Patent 5321387: Associative storage for data packets including asynchronous, self-running shift register transmission paths
(COMMUNICATIONS: ELECTRICAL : DIGITAL COMPARATOR SYSTEMS : Electromagnetically actuated mechanical signal)

Patent 5321388: High efficiency phase and amplitude matched multiple horn electronic siren
(COMMUNICATIONS: ELECTRICAL : AUDIBLE INDICATION : Pneumatic-type sound producer (e.g., whistle or siren) : Housing or mounting)

Patent 5321389: Battery charge monitor
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : Internal alarm or indicator responsive to a condition of the vehicle : Battery charging system condition : Wear)

Patent 5321390: Sensor switch
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Intrusion detection : Responsive to intruder energy : Vibration : Fence)

Patent 5321391: Fish-bite indicator
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Human or animal : Nondomestic animal (e.g., for hunting, fishing, or repelling) : Specified device housing or attachment means)

Patent 5321392: Infusion pump with battery back-up
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Condition of electrical apparatus : Battery : Semiconductor detector)

Patent 5321393: Spare card connection and switching circuitry for high-speed telecommunications interfaces
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Spare channel : Having specified mounting structure)

Patent 5321394: Spare card connection circuitry for high-speed telecommunications transmitters/receivers and methods
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Spare channel : Having specified mounting structure)

Patent 5321395: System providing verified information exchange between an electronic record carrier and a read/write unit
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Intelligence comparison for controlling : Authorization control (e.g., entry into an area) : Coded record input (e.g., IC card or key) : Wireless transceiver : Image (e.g., fingerprint, face))

Patent 5321396: Indexing of audio/video data
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Having indication or alarm (e.g., location indication) : Location indication : Housing detail)

Patent 5321397: Data encoder for producing and storing info runlength value, bit length values and encoded words from input data values
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : To or from run length limited codes : Binary to or from ternary)

Patent 5321398: Variable length coder and data packing circuit
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : To or from variable length codes : To or from Morse code)

Patent 5321399: Parallel/serial conversion circuit, serial/parallel conversion circuit and system including such circuits
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Serial to parallel : Binary to Gray)

Patent 5321400: Serial data interface circuit dealing with a plurality of receiving modes
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Serial to parallel : Binary to Gray)

Patent 5321401: Method and apparatus for digital to analog conversion with minimized distortion
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Digital to analog conversion : Function generator : With rollover feature (i.e., antidoublestrike))

Patent 5321402: Analog-to-digital conversion method and device
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Analog input compared with static reference : Acting sequentially : Including priority encoder)

Patent 5321403: Multiple slope analog-to-digital converter
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Intermediate conversion to time interval : Plural slope : Including priority encoder)

Patent 5321404: Ripsaw analog-to-digital converter and method
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Intermediate conversion to time interval : Input signal compared with linear ramp : Including priority encoder)

Patent 5321405: Radio frequency energy jamming system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR EW (ELECTRONIC WARFARE) : ECM (Electronic countermeasures, i.e., jamming) : With repeater :)

Patent 5321406: Method of track merging in an aircraft tracking system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : AIRCRAFT COLLISION AVOIDANCE SYSTEM (CAS) : With transponder : Included in Secondary Surveilance Radar (SSR) or Air Traffic Control Radio Beacon System (ATCRBS) : By varying gain or blocking receiver)

Patent 5321407: Method for estimating relative speed between vehicle and objective obstacle
(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 5321408: Microwave apparatus and method for ullage measurement of agitated fluids by spectral averaging
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DETERMINING DISTANCE : Material level within container : FM type)

Patent 5321409: Radar system utilizing chaotic coding
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : WITH PARTICULAR CIRCUIT : For pulse modulation : Combined with pulse modulation)

Patent 5321410: Adaptive doppler DF system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Beacon or receiver : Direction-finding receiver only : Having a phase detector : Including a goniometer)

Patent 5321411: Planar antenna for linearly polarized waves
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Microstrip : Reflector or director)

Patent 5321412: Antenna arrangement with reduced coupling between transmit antenna and receive antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : High frequency type loops : Plural : With feedback)

Patent 5321413: Offset active antenna having two reflectors
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With spaced or external radio wave refractor (e.g., lens) : With reflector : With feedback)

Patent 5321414: Dual polarization dipole array antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Balanced doublet - centerfed (e.g., dipole) : Plural : With coupling network : With parasitic element (e.g., reflector or director))

Patent 5321415: Optical display of vehicle speed
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : IMAGE SUPERPOSITION BY OPTICAL MEANS (E.G., HEADS-UP DISPLAY) : Three-dimensional arrays)

Patent 5321416: Head-mounted visual display apparatus
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : IMAGE SUPERPOSITION BY OPTICAL MEANS (E.G., HEADS-UP DISPLAY) : Operator body-mounted heads-up display (e.g., helmet mounted display) : Number of pixels per row or column conversion (i.e., resolution conversion))

Patent 5321417: Visual display panel
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Optical means interposed in viewing path (e.g., filters, lens, etc.) : Addressing)

Patent 5321418: Method for displaying images comprising Q levels of grey on a matrix screen
(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) : Gray scale capability (e.g., halftone) : Including transformer)

Patent 5321419: Display apparatus having both refresh-scan and partial-scan
(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) : Waveform generation : Ferroelectric liquid crystal elements : Smooth or continuous)

Patent 5321420: Operator interface for an electronic measurement system
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graph generating : Real-time waveform display : Image based (addressing))

Patent 5321421: Portable electronic device capable of receiving and transmitting lower-case letter codes while displaying only upper-case letters
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Character generating : Straight line)

Patent 5321423: Document information system and document data transfer and display method
(DATA PROCESSING: PRESENTATION PROCESSING OF DOCUMENT, OPERATOR INTERFACE PROCESSING, AND SCREEN SAVER DISPLAY PROCESSING : PRESENTATION PROCESSING OF DOCUMENT : Display processing : Pagination)

Patent 5321424: Adaptive graticule
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Attributes (surface detail or characteristic, display attributes) : Color or intensity : Repeating pattern)

Patent 5321425: Resolution independent screen refresh strategy
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM : Addressing : For 2D coordinate to linear address conversion : Address translation (e.g., between virtual and physical addresses))

Patent 5321426: Scan laser thermal printer
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Tone marking : Including switching means)

Patent 5321427: Print head modulator
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Gradational recording : Sequentially)

Patent 5321428: Laser printer power saver
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Having driving circuitry for recording means : Specific conductor means (e.g., electrode, conducting pattern, etc.))

Patent 5321429: Optical printing head for optical printing system
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Specific light source (e.g., LEDs assembly) : Including switching means)

Patent 5321430: Apparatus and method for gray and edge enhancement
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Tone marking : By adjusting pulse width of light beam : Specific lens)

Patent 5321431: Method for printing with scanned liquid crystal cells
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Multicolor : Having deflecting means)

Patent 5321449: Projecting flashlight
(OPTICS: IMAGE PROJECTORS : GUN, FLASHLIGHT OR BATTERY OPERATED TYPE : Vernier or plural scales)

Patent 5321450: Low profile liquid crystal projector and method of using same
(OPTICS: IMAGE PROJECTORS : HOUSING : Slides gripped or hooked)

Patent 5321451: Transparency folder and holder apparatus
(OPTICS: IMAGE PROJECTORS : PICTURE CARRIER : Slides gripped or hooked)

Patent 5321452: Magnetic head for a camera featuring multiple, varied-sized head portions
(PHOTOGRAPHY : WITH DATA RECORDING : Data for control of subsequent processing of film : Images recorded on separate films)

Patent 5321453: Probe apparatus for probing an object held above the probe card
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : With probe elements : Using electro-optic device)

Patent 5321454: Zoom lens camera
(PHOTOGRAPHY : FLASH SYSTEM RESPONSIVE TO FOCAL LENGTH OR DISTANCE : Illumination angle responds to focal length or distance : And means to move film)

Patent 5321455: Camera apparatus and method for film double exposure prevention
(PHOTOGRAPHY : WITH FILM DRIVE : Double exposure prevention : Midroll interrupt : Base guide)

Patent 5321456: Detachable view finder for video camera
(PHOTOGRAPHY : WITH VIEWFINDER : Selective or adjustable viewing position : Variable orientation of finder image)

Patent 5321457: Real image type finder system that changes an aspect ratio of a visual field by varying magnification
(PHOTOGRAPHY : WITH VIEWFINDER : Selective or adjustable viewfinder field : Zoom : Base guide)

Patent 5321458: Method and apparatus for developing presensitized offset printing plates
(PHOTOGRAPHY : FLUID-TREATING APPARATUS : Heating, cooling, or temperature detecting : Transmittivity/reflectivity of photographic medium sensing)

Patent 5321459: Automatic focusing device
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having pursuit mode : With mechanical rangefinder)

Patent 5321460: Autofocusing controlling apparatus for camera
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having auxiliary illumination : Having plural emitters : Focus position adjusted according to focal length)

Patent 5321461: Focus detecting device
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Plural focusing or rangefinding areas : With Position Sensitive Device (PSD))

Patent 5321462: Lens shutter camera including zoom lens
(PHOTOGRAPHY : HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE : Power zoom : Having mechanical interlock)

Patent 5321463: Linear time counter indicating tape running amount
(DATA PROCESSING: MEASURING, CALIBRATING, OR TESTING : MEASUREMENT SYSTEM : Dimensional determination : Linear distance or length : By rotary encoding means : For wheel speed)

Patent 5321464: Jam-free continuous-forms printer
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Original moves continuously : Original moves continuously)

Patent 5321465: Film analyzer apparatus
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Methods : Including vacuum, fluid or spring pressure)

Patent 5321466: Image forming equipment with reserve mode to prevent unauthorized cancellation of pending job
(ELECTROPHOTOGRAPHY : MACHINE OPERATION : Accounting : Reference signal (e.g., pulse train))

Patent 5321467: Image forming apparatus with ink jet and electrophotographic recording units
(ELECTROPHOTOGRAPHY : COMBINED WITH DIVERSE SUBJECT MATTER : With diverse image formation :)

Patent 5321468: Image forming apparatus having inference means and method of manufacturing the same
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Artificial intelligence : Single detector for plural toners)

Patent 5321469: Gearing arrangement for driving a photo-sensitive drum of an electro-photography process unit
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Photoconductive member : Drive apparatus : Alignment or tensioning)

Patent 5321470: Apparatus with anti-forgery provision
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Original : Unauthorized copy prevention : Lamination)

Patent 5321471: Apparatus for and method of forming image
(ELECTROPHOTOGRAPHY : SUPPLEMENTAL ELECTROPHOTOGRAPHIC PROCESS : Exposure or charging (e.g., fatigue treatment) : Of residual toner : New and waste toner container)

Patent 5321472: Charging member with a bridging electrode structure and charging device using same in an image forming apparatus
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Charging : Contact : Needle type)

Patent 5321473: Sealing members for a developing device in an image forming apparatus
(ELECTROPHOTOGRAPHY : INTERNAL MACHINE ENVIRONMENT : Particle or contaminant control : Seal : Developer seal : Concentration detection)

Patent 5321474: Active damping of electrode wire vibration in scavengeless development in a xerographic apparatus
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Dry development : Application member : Having cloud-forming application : Having internal rotary member)

Patent 5321475: Color image forming apparatus which accelerates or decelerates the developing sleeves at a constant rate
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Applicator speed : Bias voltage)

Patent 5321476: Heated bias transfer roll
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of transfer : Concentration control)

Patent 5321477: Image forming apparatus capable of preventing the winding on the image carrier
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Electrostatic : Corona : Having belt transporting copy : Vacuum or pneumatic)

Patent 5321478: Image forming apparatus which can discriminate frequency of image forming operations
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of fixing : Temperature control : Warmup or standby mode : Concentration detection)

Patent 5321479: Electrophotographic apparatus
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of fixing : Temperature control : Warmup or standby mode : Concentration detection)

Patent 5321480: Fuser having a detachable belt
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Fixing (e.g., fusing) : By heat and pressure : Continuous web : Cleaning member)

Patent 5321481: Fuser temperature and copy output controller
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of fixing : Temperature control : Detection of toner in developing unit)

Patent 5321482: Process cartridge and image forming apparatus including a lubricant provided on a cleaning member for cleaning an image bearing member
(ELECTROPHOTOGRAPHY : CLEANING OF IMAGING SURFACE : Including lubricant : Having treatment of image)

Patent 5321483: Cleaning device for image forming equipment
(ELECTROPHOTOGRAPHY : CLEANING OF IMAGING SURFACE : Blade : Having holder : Lamination)

Patent 5321484: High efficiency low power air manifold for cleaner subsystems
(ELECTROPHOTOGRAPHY : CLEANING OF IMAGING SURFACE : Fibrous brush : Having forced air (e.g., vacuum) : Lamination)

Patent 5321485: Printing apparatus having manual sheet feeding and document reading capabilities
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Image reproduction system : Composite image)

Patent 5321486: Image forming apparatus with control based on detected and designated recording medium size
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Unacceptable copy coverage : Electrostatic)

Patent 5321487: Color correction structure for color imaging device
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Exposure : Formation of color separation images : Roller)

Patent 5321488: Inter-vehicle distance detecting device
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : Triangulation ranging with photodetection, but with no projected beam : Using at least a pair of viewing axes : With at least one paired set of staring photodetectors)

Patent 5321489: Method for the avoidance of collisions between aircraft and onboard optical set designed for its implementation
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : With photodetection : Using at least a pair of viewing axes)

Patent 5321490: Active near-field object sensor and method employing object classification techniques
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : With photodetection : Of pulse transit time : Having one or more return pulse gates or windows : Having electronic scanning of the photodetector)

Patent 5321491: Method and apparatus for grading shell eggs
(OPTICS: MEASURING AND TESTING : EGG CANDLING : Photoelectric : Telescopic)

Patent 5321492: Dual function readhead for a reflectance instrument
(OPTICS: MEASURING AND TESTING : PLURAL TEST : Lamp attachments)

Patent 5321493: Apparatus and method for evaluating a projection lens
(OPTICS: MEASURING AND TESTING : LENS OR REFLECTIVE IMAGE FORMER TESTING : With lamp focusing)

Patent 5321494: Subtractive measurement method and apparatus for CRT output intensity measurement
(OPTICS: MEASURING AND TESTING : PHOTOMETERS : Photoelectric : With scanning, sweeping, or moving detector over film)

Patent 5321495: Optical detecting system for determining particle position on a substrate
(OPTICS: MEASURING AND TESTING : INSPECTION OF FLAWS OR IMPURITIES : Surface condition : Detection of object or particle on surface : Detection of an object or particle on surface)

Patent 5321496: Apparatus for monitoring trash in a fiber sample
(OPTICS: MEASURING AND TESTING : INSPECTION OF FLAWS OR IMPURITIES : Textile inspection : Detection of foreign material (e.g., trash, splinters, contaminants, etc.) : Standard movable)

Patent 5321497: Interferometric integration technique and apparatus to confine 2.pi. discontinuity
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : For dimensional measurement : Contour or profile : By wavefront detection : Of highly reflective surface (e.g., mirror) : Planar surface :)

Patent 5321498: Planar integrated crossover optical system
(OPTICAL WAVEGUIDES : INTEGRATED OPTICAL CIRCUIT : Including physical deformation or movement of waveguide)

Patent 5321499: Dichroic mirror and an image projection apparatus using the same
(TELEVISION : VIDEO DISPLAY : Projection device : Plural parallel light modulators : With optical element : Beam combining : Including frame or field delays (e.g., motion adaptive))

Patent 5321500: Non-real-time film scanning system
(TELEVISION : SPECIAL APPLICATIONS : Film, disc or card scanning : Motion picture film scanner : Alignment or positioning)

Patent 5321501: Method and apparatus for optical imaging with means for controlling the longitudinal range of the sample
(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 5321502: Measuring method and measuring apparatus
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Having light beams of different frequencies (e.g., heterodyning) : For dimensional measurement (e.g., thickness gap, alignment, profile) : Alignment : Polarization)

Patent 5321503: Closed loop, depolarized interferometric fiber optic (IFOG) gyroscope with self adjusting serrodyne phase nulling
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Rotation rate (e.g., ring laser gyros) : By fiber or waveguide interferometer (e.g., Sagnac effect) : Having null feedback loop : Including an alternating reference path)

Patent 5321504: Modified black-level regulation based on warm up detection of CRT
(TELEVISION : CATHODE-RAY TUBE DISPLAY AUTOMATIC BLACK LEVEL BIAS CONTROL : With disabling)

Patent 5321505: Computer scalable visualization system
(TELEVISION : MODULAR IMAGE DISPLAY SYSTEM : With beam energy determining color)

Patent 5321506: Automatic screw-on pipe couplings
(TELEVISION : SPECIAL APPLICATIONS : Manufacturing : Position detection : Alignment or positioning : With alternating polarization)

Patent 5321507: Motion signal detecting circuit
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Motion dependent key signal generation or scene change detection : Specified processing of frame or field difference signal (e.g., noise reduction, key signal spreading) : Level derived within feedback path)

Patent 5321508: Video image data recording apparatus
(TELEVISION : BANDWIDTH REDUCTION SYSTEM : Frame field or line dropping followed by time expansion and time compression : Individual processing of different parts of image frequency band (e.g., sum and difference, high band/low band))

Patent 5321509: Apparatus and method for controlling a charge coupled device image sensor to provide sequential output of video image signals
(TELEVISION : SYNCHRONIZATION : Sync generation : Color)

Patent 5321510: Serial video processor
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : For display of additional information)

Patent 5321511: Horizontal edge compensation circuit for a digital image processor
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Transition or edge sharpeners : For color television)

Patent 5321512: Ghost signal cancellation system using feedforward and feedback filters for television signals
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Noise or undesired signal reduction : Specified color (e.g., saturation and contrast control))

Patent 5321513: Apparatus for shifting the DC level of a luminance signal based on frequency distribution and rate of modulation
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : DC insertion : With DC clamping)

Patent 5321514: Interactive television and data transmission system
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : CELLULAR VIDEO DISTRIBUTION SYSTEM : Interactive program selection)

Patent 5321515: Image fluctuation correcting apparatus
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Camera image stabilization : Motion correction : Electrical (memory shifting, electronic zoom, etc.) : Motion detection)

Patent 5321516: Tie arrangement for securing a cathode ray tube board onto a cathode ray tube neck
(TELEVISION : VIDEO DISPLAY : Cathode-ray tube : Support : Implosion protection)

Patent 5321517: Image transmission apparatus indicating a color type of the color signal transmitted
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF COLOR TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Separately processed primary color signals : Having another signal)

Patent 5321518: Video signal recording and reproducing apparatus using an added specific signal during recording
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF COLOR TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Compressing when recording or decompressing when reproducing : Separately recorded)

Patent 5321519: Crosstalk detector for optically read signals
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Recorder or reproducer fault condition compensation : Noise reduction : Crosstalk : Disc)

Patent 5321520: Automated high definition/resolution image storage, retrieval and transmission system
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Document filing and retrieval system : Composite image)

Patent 5321521: Image data compression transmission method utilizing a synchronization code
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Reduced time or bandwidth for static image communication : Auxiliary information transmitted (e.g., required to perform or identify decoding technique) : Coded image communication rate)

Patent 5321522: ADCT compression with minimum compression ratio
(IMAGE ANALYSIS : IMAGE COMPRESSION OR CODING : Adaptive coding (i.e., changes based upon history, activity, busyness, etc.) : Checking spelling for recognition)

Patent 5321523: Image processing apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : STATIC PRESENTATION PROCESSING (E.G., PROCESSING DATA FOR PRINTER, ETC.) : Attribute control : Multi-level image reproduction (e.g., gray level reproduction) : Adaptive multi-level image reproduction : Screen property or geometry (e.g., shape, period, symmetry, aspect ratio))

Patent 5321524: Gray level compensator for picture recorder
(FACSIMILE AND STATIC PRESENTATION PROCESSING : STATIC PRESENTATION PROCESSING (E.G., PROCESSING DATA FOR PRINTER, ETC.) : Attribute control : Multi-level image reproduction (e.g., gray level reproduction) : Look-up table for image processing or print attribute data (e.g., threshold value, print element property) : Variable threshold determined by image or other condition (e.g., adaptive thresholding))

Patent 5321525: Clustered halftoning with dot-to-dot error diffusion
(FACSIMILE AND STATIC PRESENTATION PROCESSING : STATIC PRESENTATION PROCESSING (E.G., PROCESSING DATA FOR PRINTER, ETC.) : Attribute control : Multi-level image reproduction (e.g., gray level reproduction) :)

Patent 5321526: White level detection circuit for an optical image reader
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Specific signal processing circuitry : Image processing : To distinguish intelligence from background : Variable threshold determined by image or other condition (e.g., adaptive thresholding))

Patent 5321527: Integrated document imaging assembly
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Picture signal generator : Scanning : Picture signal thresholding)

Patent 5321528: Image pick-up device correcting offset errors from a plurality of output amplifiers
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Picture signal generator : Scanning : Solid state : Including a polygon reflector)

Patent 5321529: Color image processing with smoothing of differential components and addition of the result to a specific color component
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Detail of image placement or content)

Patent 5321530: Image formation system employing optical memory
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Image reproduction : Page or frame memory)

Patent 5321531: Image processing apparatus capable of document discrimination
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Scanning : Thermal)

Patent 5321532: Image processing apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Specific image-processing circuitry : Halftone processing : With plural sensors)

Patent 5321533: Polymer dispersed ferroelectric smectic liquid crystal
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Microencapsulated or polymer dispersed liquid crystal : With each cell displaying a different pattern)

Patent 5321534: Liquid crystal display element including a gel of liquid crystal material and an organic compound having a perfluoroalkyl group
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Microencapsulated or polymer dispersed liquid crystal : Formed by particular technique : With nonpolymer encapsulating medium)

Patent 5321535: Liquid crystal display device with control capacitors for gray scale
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Producing a greyscale effect : With each cell displaying a different pattern)

Patent 5321536: Liquid crystal operation device and an image system using the same
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : LIQUID CRYSTAL SYSTEM : Computational system employing liquid crystal element (neural network, correlation device, optical computer) : For protection)

Patent 5321537: Method for producing chiral smectic liquid crystal device including masking areas between electrodes, rubbing, removing mask, and rubbing
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Particular nonoptical film or layer (e.g., adhesive layer, barrier layer) : Alignment layer : With plural alignments on the same substrate : Having structure produced by rubbing under particular rubbing conditions (e.g., particular direction, rubbing force, by using named rubbing material or roller, etc.))

Patent 5321538: Method for gradation display using a liquid crystal optical element with minute insulation portions on the electrodes
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Producing a greyscale effect : With each cell displaying a different pattern)

Patent 5321539: Liquid crystal Fabry-Perot etalon with glass spacer
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : LIQUID CRYSTAL OPTICAL ELEMENT : Liquid crystal etalon : Including passive liquid crystal switch portion)

Patent 5321540: Optical frequency division multiplexing network
(OPTICAL COMMUNICATIONS : MULTIPLEX : Wavelength division or frequency division (e.g., Raman, Brillouin, etc.) : Multiple Access (e.g., CDMA))

Patent 5321541: Passive optical communication network with broadband upgrade
(OPTICAL COMMUNICATIONS : MULTIPLEX : Wavelength division or frequency division (e.g., Raman, Brillouin, etc.) : By optical coupling : Bus)

Patent 5321542: Control method and apparatus for wireless data link
(OPTICAL COMMUNICATIONS : OPTICAL COMMUNICATION OVER FREEE SPACE : In an office environment : Space to ground or ground to space)

Patent 5321543: Apparatus and method for linearizing an external optical modulator
(OPTICAL COMMUNICATIONS : TRANSMITTER : Including compensation : For noise or distortion : Pulse time)

Patent 5321544: Electrochromic structures and methods
(OPTICAL: SYSTEMS AND ELEMENTS : OPTICAL MODULATOR : Light wave temporal modulation (e.g., frequency, amplitude, etc.) : Changing bulk optical parameter : Electro-optic : Electrochromic : Reflection-type (e.g., display device) : Particular electrochromic layer structure :)

Patent 5321545: Microscope stage for rapid and indexed analysis of filters and other media carrying multiple samples, and a method of analyzing such samples
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Microscope : Stage or slide carrier : With illuminator support)

Patent 5321546: Switching variable magnification finder
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Telescope : Selectable magnification : Plural magnification in same viewing field)

Patent 5321547: Monocular telescope
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Telescope : With prism or U-shaped optical path : Equatorial mount)

Patent 5321548: Real image mode variable magnification finder optical system
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Telescope : With prism or U-shaped optical path : Equatorial mount)

Patent 5321549: Cleaning apparatus for an object lens
(OPTICAL: SYSTEMS AND ELEMENTS : PROTECTION FROM MOISTURE OR FOREIGN PARTICLE : Extension of tubular element adjustable)

Patent 5321550: Optical system of optical information recording/reproducing apparatus
(OPTICAL: SYSTEMS AND ELEMENTS : SINGLE CHANNEL SIMULTANEOUSLY TO OR FROM PLURAL CHANNELS (E.G., LIGHT DIVIDING, COMBINING, OR PLURAL IMAGE FORMING, ETC.) : Including particles loosely housed for agitation)

Patent 5321551: Projection lens apparatus for rear projection television
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : With field curvature shaping : Projection type : With additional reflector (e.g., serial reflections, etc.))

Patent 5321552: Rear-focus-type zoom lens equipped with index-distribution-type lens
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : With graded refractive index : Having a radial gradient : Having less than four components)

Patent 5321553: Zoom lens
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : With variable magnification (e.g., zoom type) : With mechanical compensation : Other than first group moves for focusing (internal focus type) : Cylindrical lenslets)

Patent 5321554: Inverse telescopic wide angle lens
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Reverse telephoto : With five or less components : Having curvilinear lens)

Patent 5321555: Compact photographic objective of the triplet type having improved chromatic and monochromatic characteristics
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Multiple component lenses : Three components : + - + Arrangement : With multiple element first component : With multiple element component)

Patent 5321556: Vehicle safety convex rearview mirror with distortion offset means and method of using the same
(OPTICAL: SYSTEMS AND ELEMENTS : MIRROR : Plural mirrors or reflecting surfaces : With successive reflections : Including an adjustable mirror : Including a curved mirror : Sliding barrels)

Patent 5321557: Magnetic recording and reproducing apparatus having multiple magnetic heads
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : AUTOMATIC CONTROL OF A RECORDER MECHANISM : Controlling the head : Track centering : Elongated web carrier (i.e., tape) : Transverse scan path : By pilot signal : From separate track)

Patent 5321558: Method of storing data on a magnetic tape
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL PROCESSING OF A DIGITAL SIGNAL : Frequency)

Patent 5321559: Asynchronous peak detection of information embedded within PRML class IV sampling data detection channel
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL PROCESSING OF A DIGITAL SIGNAL : Head amplifier circuit : Intra-cell transition)

Patent 5321560: Embedded servo system for low power disk drives
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL PROCESSING OF A DIGITAL SIGNAL : Data in specific format : Intra-cell transition)

Patent 5321561: Format for recording digital audio onto magnetic tape with enhanced editing and error correction capability
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL PROCESSING OF A DIGITAL SIGNAL : Data in specific format : Intra-cell transition)

Patent 5321562: Data recording and/or reproducing apparatus
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL PROCESSING OF A DIGITAL SIGNAL : Data in specific format : Intra-cell transition)

Patent 5321563: Biasing and erasing apparatus and method for magnetic tape recording devices to improve signal-to-noise ratio
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL RECORDING OR REPRODUCING : Specifics of biasing or erasing : Between heads in alternate engagement with medium)

Patent 5321564: Data head offset detecting circuit in magnetic disk unit and magnetic disk unit using said data head offset detecting circuit
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : AUTOMATIC CONTROL OF A RECORDER MECHANISM : Controlling the head : Track centering : Rotary carrier : By memory storage of repeatable error or correction : By signal derived from transport)

Patent 5321565: Recording/reproducing apparatus having plural sliding chassis for compact configuration
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD TRANSPORT WITH HEAD MOVING DURING TRANSDUCING : Tape record : Rotating head : Tape in container : Drum)

Patent 5321566: Magnetic tape threading and transport apparatus including a sensor for controlling air bearing block movement
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD TRANSPORT WITH HEAD MOVING DURING TRANSDUCING : Tape record : Rotating head : Tape in container : Drum)

Patent 5321567: Tape loading mechanism for a rotating drum and cassette tape recording and reproducing apparatus
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD TRANSPORT WITH HEAD MOVING DURING TRANSDUCING : Tape record : Rotating head : Tape in container : Drum)

Patent 5321568: Head suspension assembly with improved pitch and roll characteristics
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD MOUNTING : Disk record : Load beam detail : Gimbal mounting region detail : Pivot/load button detail : Voice coil adjuster)

Patent 5321569: Rotary magnetic head drum assembly
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD MOUNTING : For moving head during transducing : Tape record having rotary head : Stationary drum : Electrical connection detail : Hydrodynamic)

Patent 5321570: Systems using superimposed, orthogonal buried servo signals
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD : Gap structure details : Plural gaps : Mounting detail)

Patent 5321571: Tape cassette with slider cover rocking mechanism having coil spring retainer portion
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD MEDIUM : In container : Pressure element)

Patent 5321572: Transformer bobbin
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : SAFETY AND PROTECTION OF SYSTEMS AND DEVICES : Transformer protection : Transformer with structurally combined protective device : Bimetallic element)

Patent 5321573: Monolythic surge suppressor
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : SAFETY AND PROTECTION OF SYSTEMS AND DEVICES : Load shunting by fault responsive means (e.g., crowbar circuit) : Voltage responsive : With more than two wires)

Patent 5321574: Circuit breaker/surge arrestor package in which the arrestor uses an MOV that is thermally de-coupled from the breaker's thermal trip circuit
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : SAFETY AND PROTECTION OF SYSTEMS AND DEVICES : With specific current responsive fault sensor : With time delay protective means : Combined thermal-electromagnetic relay : With multiple timing characteristics (e.g., short, long))

Patent 5321575: Power line transient suppression circuit
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : SAFETY AND PROTECTION OF SYSTEMS AND DEVICES : Load shunting by fault responsive means (e.g., crowbar circuit) : Voltage responsive : With more than two wires)

Patent 5321576: Heat flow detector for recessed incandescent fixtures
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : SAFETY AND PROTECTION OF SYSTEMS AND DEVICES : Circuit interruption by thermal sensing : With mechanical circuit breaker)

Patent 5321577: Protector module for telephone line pair
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : SAFETY AND PROTECTION OF SYSTEMS AND DEVICES : High voltage dissipation (e.g., lightning arrester) : Surge prevention (e.g., choke coil) : In communication systems : With multiple timing characteristics (e.g., short, long))

Patent 5321578: Rain detector for automatic irrigation systems
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES : For relays or solenoids : Condition responsive (e.g., external circuit condition) : Fluid (e.g., liquid level, humidity) : Plural light sensors)

Patent 5321579: Office panelling system with a monitor screen mounted on a cantilevered adjustable arm
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : Including display support : Fluid)

Patent 5321580: Expansion device with power cord and guide groove for expanding functions of compact electronic apparatus
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : Computer related support : Memory unit support : Air)

Patent 5321581: Air distribution system and manifold for cooling electronic components
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : With cooling means : Fluid : Air : With air circulating means : Fan or blower : With stabilizer or modifying substance)

Patent 5321582: Electronic component heat sink attachment using a low force spring
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : With cooling means : Thermal conduction : Through support means : Electrically insulating thermally conductive : Cooling plate or bar)

Patent 5321583: Electrically conductive interposer and array package concept for interconnecting to a circuit board
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : Printed circuit board : Connection of components to board : With mounting pad : Having spacer : Circuit board mounted)

Patent 5321584: Battery and holder assembly for use with a battery operated touch pen
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : Printed circuit board : With housing or chassis : With particular conductive material or coating)

Patent 5321585: Directly solderable auxiliary circuit board assembly and methods of making and using the same
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : Printed circuit board : Plural : Having semiconductive device)

Patent 5321586: Lighting device for a vehicle having at least one central light source
(ILLUMINATION : LIGHT FIBER, ROD, OR PIPE : With optical fiber bundle : Holder)

Patent 5321587: Chemiluminescence device
(ILLUMINATION : CHEMILUMINESCENT LIGHTING : Specific material (e.g., type of light conducting material, material of pipe or rod))

Patent 5321588: Motor vehicle lamp
(ILLUMINATION : SUPPORTED BY VEHICLE STRUCTURE (E.G., ESPECIALLY ADAPTED FOR VEHICLE) : Plural light sources : Emergency)

Patent 5321589: Apparatus for controlling irradiation angle of a headlamp light
(ILLUMINATION : SUPPORTED BY VEHICLE STRUCTURE (E.G., ESPECIALLY ADAPTED FOR VEHICLE) : Adjustable lamp or lamp support : Gear driven : Plural separate sections with complex surfaces)

Patent 5321590: Headlight adjusting device
(ILLUMINATION : SUPPORTED BY VEHICLE STRUCTURE (E.G., ESPECIALLY ADAPTED FOR VEHICLE) : Adjustable lamp or lamp support : Manually operable (e.g., remote manual actuation) : Retractable headlight)

Patent 5321591: Toy flashlight strobe module
(ILLUMINATION : SELF POWERED LAMP : Dome, globe or wire guard or lamp bulb cover : With a protective cage)

Patent 5321592: Low voltage outdoors lighting system installed by hand without tools
(ILLUMINATION : QUICK DISCONNECT-TYPE LIGHT UNIT : Plural sources or supports therefor)

Patent 5321593: Strip lighting system using light emitting diodes
(ILLUMINATION : PLURAL LIGHT SOURCES : With support : With switch : Shielding type modifier)

Patent 5321594: Headlight for vehicles
(ILLUMINATION : SUPPORTED BY VEHICLE STRUCTURE (E.G., ESPECIALLY ADAPTED FOR VEHICLE) : Housing : With common housing)

Patent 5321595: Double bulb mercury vapor lamp apparatus
(ILLUMINATION : HOUSING : With cooling means : Arm or bracket)

Patent 5321596: DC/DC/AC power supply for a subscriber interphase unit
(ELECTRIC POWER CONVERSION SYSTEMS : CASCADED OR COMBINED, DIVERSE CONVERSIONS IN WHICH THE FREQUENCY OR PHASE OR COMBINED CONVERSION IS WITHOUT INTERMEDIATE CONVERSION TO D.C. : Current and frequency (e.g., f1-f2-D.C.) : Phase 1 to phase 2 to D.C.)

Patent 5321597: Galvanic isolation device for direct current electrical signals or electrical signals likely to include a direct current component
(ELECTRIC POWER CONVERSION SYSTEMS : CURRENT CONVERSION : Including D.C.-A.C.-D.C. converter : Having transistorized inverter : Double-ended (i.e., push-pull), separately-driven type : With automatic control of the magnitude of output voltage or current : For flyback-type converter)

Patent 5321598: Three-phase active filter utilizing rotating axis transformation
(ELECTRIC POWER CONVERSION SYSTEMS : CURRENT CONVERSION : With means to introduce or eliminate frequency components : In inverter systems : By pulse modulation technique (e.g., PWM, PPM, etc.) : With automatic control of the magnitude of output voltage or current)

Patent 5321599: Control apparatus for suppressing a third harmonic neutral point voltage in a three level inverter
(ELECTRIC POWER CONVERSION SYSTEMS : CURRENT CONVERSION : With means to introduce or eliminate frequency components : In inverter systems : By pulse modulation technique (e.g., PWM, PPM, etc.) : With automatic control of the magnitude of output voltage or current)

Patent 5321600: Delta connected three phase AC-DC converter with power factor correction circuits
(ELECTRIC POWER CONVERSION SYSTEMS : CURRENT CONVERSION : Having plural converters for single conversion : Including semiconductor means)

Patent 5321601: Apparatus for controlling flow in a sewer regulator
(DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS : GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS : Sequential or selective : State of condition or parameter (e.g., on/off) : Shared memory)

Patent 5321602: Tutorial control panel
(DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS : GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS : Sequential or selective : Operator interface (e.g., display with control) : Time responsive (duration))

Patent 5321603: Programming apparatus for an industrial controller using two-dimensional graphic behavior profiles
(DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS : GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS : Sequential or selective : Operator interface (e.g., display with control) : Time responsive (duration))

Patent 5321604: Apparatus and process for administering promotional mailing
(DATA PROCESSING: FINANCIAL, BUSINESS PRACTICE, MANAGEMENT, OR COST/PRICE DETERMINATION : AUTOMATED ELECTRICAL FINANCIAL OR BUSINESS PRACTICE OR MANAGEMENT ARRANGEMENT : Distribution or redemption of coupon, or incentive or promotion program : Job performance analysis)

Patent 5321605: Process flow information management system
(DATA PROCESSING: FINANCIAL, BUSINESS PRACTICE, MANAGEMENT, OR COST/PRICE DETERMINATION : AUTOMATED ELECTRICAL FINANCIAL OR BUSINESS PRACTICE OR MANAGEMENT ARRANGEMENT : Operations research : Coordination of plural reservations (e.g., plural trip segments; transportation and accommodation, etc.))

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