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Patent 5028716: 3,5-diamino-1,2,4-triazole derivatives
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : : Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) : 1,2,4-triazoles (including hydrogenated) : Nitrogen attached directly to the triazole ring by nonionic bonding : Plural nitrogens attached directly to the triazole ring by nonionic bonding : Nitrogen or additional chalcogen attached indirectly to the chalcogen by acyclic nonionic bonding)
Patent 5028717: Herbicidal and fungicidal agents based on substituted pyrazolin-5-one derivatives
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : : Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) : 1,2-diazoles (including hydrogenated) : Chalcogen bonded directly to ring carbon of the diazole ring : Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding : Acyclic nitrogen or chalcogen bonded directly to the -C(=X)- group)
Patent 5028718: Amino acid derivatives, their production and use in preparing carbapenem and carbapenam compounds
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : : Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) : Having -C(=X)-, wherein X is chalcogen, bonded directly to the five membered hetero ring (e.g., pyrrole carbonyl halides, pyrrole carboxaldehyde, etc.) : The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens (e.g., pyrrole-3-carboxylic acid, etc.) : And is bonded directly to a ring carbon which is adjacent to the ring nitrogen of the five-membered hetero ring (e.g., 4-hydroxy proline, etc.) : The atom is carbon or the chain consists of carbons)
Patent 5028719: N-alkylether 2-pyrrolidones
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : : Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) : Chalcogen attached directly to the five-membered hetero ring by nonionic bonding (e.g., 3-pyrrolidinols, etc.) : Chalcogen bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-pyrrolidones, etc.) : And chalcogen bonded directly to a ring carbon of the five membered hetero ring which is not adjacent to the ring nitrogen (e.g., 2,4 pyrrolidinediones, etc.) : The five-membered hetero ring is further unsubstituted or alkyl substituted only (e.g., proline, etc.))
Patent 5028720: 6,7-nonsubstituted and 6,7-disubstituted-3,4-dihydroxy benzopyran-2H-one compounds having antiaggregatory properties and processes for their
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : : Oxygen containing hetero ring (e.g., dioxirane, etc.) : Lactones (i.e., -C(=X)O-, wherein X is chalcogen, is part of the hetero ring) : The lactone ring is six-membered : Polycyclo ring system having the lactone ring as one of the cyclos : Bicyclo ring system having the lactone ring as one of the cyclos : Additional acyclic chalcogen bonded directly to the lactone ring : At least two additional chalcogens bonded directly to the tetracyclo ring system)
Patent 5028721: Bis(functionally-substituted phenylene) semi-rigid crowns and process for making
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : : Oxygen containing hetero ring (e.g., dioxirane, etc.) : The hetero ring has at least seven members : Plural ring oxygens in the hetero ring : Three or more ring oxygens in the hetero ring : Bicyclo ring system having the hetero ring as one of the cyclos)
Patent 5028722: Novel 7 .beta.-hydroxy-4-pregnene-3,20-dione derivatives and method for preparing same
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Cyclopentanohydrophenanthrene ring system containing : Carbon bonded directly at the 17-beta-position of the cyclopentanohydrophenanthrene ring system is a member of an acyclic chain of two uninterrupted carbons (e.g., pregnanes, etc.) : Three or more oxygens bonded directly to the cyclopentanohydrophenanthrene ring system : Oxygen bonded directly at the 7-, 8- or 9-position : Plural oxygens bonded directly to the cyclopentanohydrophenanthrene ring system)
Patent 5028723: Process for preparing 1-hydroxy-3-oxa-1,2,4,5-pentane tetracarboxylic acid/3,6-dioxa-1,2,4,5,7,8- octane hexacarboxylic acid mixtures
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Carboxylic acids and salts thereof : Acyclic : Oxy : Polycarboxylic : Ether : Ethylene diamine tetraacetic acid per se or salt thereof)
Patent 5028724: Synthesis of volatile fluorinated and non-fluorinated metal-beta-ketonate and metal-beta-ketoiminato complexes
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) : Plural -C(=X)- groups, wherein X is chalcogen, bonded directly to the same non-benzenoid carbons, or the enolate thereof. (e.g., beta-diketone chelates, acetylacetonates, etc.) : Plural nitrogens bonded directly to the same carbon or attached to each other by a chain consisting of carbons, which carbons may be part of a ring (e.g., ethylene bis-dithiocarbamates, etc.))
Patent 5028725: Thiolactone metal complexes
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) : Copper, silver, or gold containing (Cu, Ag, or Au) : Chalcogen bonded directly to the metal : Plural chalcogens and plural nitro groups bonded directly to the same benzene ring (e.g., lead styphnates, lead salts of di-nitroresorcinol, etc.))
Patent 5028726: Platinum amine sulfoxide complexes
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) : Ruthenium, rhodium, palladium, osmium, iridium, or platinum containing (Ru, Rh, Pd, Os, Ir, or Pt) : Nitrogen bonded directly to the metal : Carbocyclic ring bonded directly to the chalcogen (e.g., zinc phenolates, zinc thiophenates, etc.))
Patent 5028727: Platinum-(IV)-diamine complex
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) : Ruthenium, rhodium, palladium, osmium, iridium, or platinum containing (Ru, Rh, Pd, Os, Ir, or Pt) : Nitrogen bonded directly to the metal : Carbocyclic ring bonded directly to the chalcogen (e.g., zinc phenolates, zinc thiophenates, etc.))
Patent 5028728: Process for the preparation of reaction products of 2,2-bis-(4-hydroxphenyl)-hexafluoropropane and new derivatives of this
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Sulfonate esters (i.e., compounds having the sulfonate group, -O-S(=O)(=O) , wherein the single bonded oxygen is bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) : Plural sulfonate groups attached indirectly to each other by nonionic bonding : Nitrogen attached directly or indirectly to a sulfonate group by nonionic bonding : Purification or recovery)
Patent 5028729: Process for the production of bis-(dialkoxythio-phosphoryl)-trisulfides
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) : Processes : Forming or utilizing an -O-O- or -S-S- group : Reactant having halogen attached directly to phosphorus by nonionic bonding)
Patent 5028730: Antihypercholesterolemic nitrile compounds
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) : Benzene ring attached indirectly to the cyano group by acyclic nonionic bonding : Benzene ring and cyano connected by a chain consisting of two carbons multiple bonded to each other : Additional benzene ring bonded directly to the chain : Cyano or carbonyl bonded directly to an acyclic carbon which is double bonded to another carbon)
Patent 5028731: Preparation of mixtures of cypermethrin or cyfluthrin isomers enriched in more active species
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) : Benzene ring attached indirectly to the cyano group by acyclic nonionic bonding : Having -C(=X)-, wherein X is chalcogen, attached indirectly to the cyano group by nonionic bonding : Oxygen bonded directly to carbonyl (e.g., carboxylic acid esters, etc.) : Three-membered carbocyclic ring containing : Cyano or carbonyl bonded directly to an acyclic carbon which is double bonded to another carbon)
Patent 5028732: Herbicidally active amino diphenyl ethers
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Carboxylic acid esters : Aromatic acid moiety : Nitrogen in acid moiety other than as nitroso or isocyanate (e.g., amino acid esters, etc.) : Nitro bonded to carbon in acid moiety : Plural rings in acid moiety : Plural nitrogens in acid moiety)
Patent 5028733: Prostaglandins
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Carboxylic acid esters : Plural alicyclic rings in acid moiety : Two rings only in acid moiety : Ortho fused : Esterified phenolic hydroxy)
Patent 5028734: Process for the selective preparation of alkenecarboxylic acid derivatives
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Carboxylic acid esters : Acyclic acid moiety : Unsaturation in acid moiety : Preparing esters by carbonylation : Group VIII noble metal catalyst utilized : Aromatic alcohol moiety)
Patent 5028735: Purification and preparation processes for methyl methacrylate
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Carboxylic acid esters : Acyclic acid moiety : Unsaturation in acid moiety : Purification or recovery : By dehydrogenation)
Patent 5028736: Process for the separation and recovery of naphthalene-sulfonic acids from aqueous solutions
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Sulfonic acids or salts thereof (i.e., compounds containing the sulfonate group, -S(=O)(=O)-O- wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or IIA light metal or to substituted or unsubstituted ammonium) : Benzene ring bonded directly to the sulfonate sulfur (e.g., purification and neutralization of benzene sulfonic acids, etc.) : Polycyclo ring system consisting of benzene rings bonded directly to the sulfonate group : Nitrogen double bonded to carbon in the cation (e.g., guanidinium salts, etc.))
Patent 5028737: Preparation of isopropylidene bis(phthalic acid)
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Carboxylic acids and salts thereof : Aromatic : Formation of carboxyl group by oxidation : Of aromatic compound : Alkyl side chain oxidized : Air, oxygen, or ozone oxidant : Halogen containing catalyst, initiator, or promoter utilized :)
Patent 5028738: Process for producing 2-oxo-3-aromatic carboxylic acid derivatives
(ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES : : Carboxylic acids and salts thereof : Aromatic : Aldehyde or ketone : Carboxyl, or salt thereof, bonded directly to a ring)
Patent 5028739: EMI/REI shielding gasket
(ELECTRICITY: CONDUCTORS AND INSULATORS : ANTI-INDUCTIVE STRUCTURES : Shielded or screened : Gaskets, covers : Spark plugs)
Patent 5028740: Hollow housing case for sheathing and electromagnetically shielding electrical apparatus
(ELECTRICITY: CONDUCTORS AND INSULATORS : ANTI-INDUCTIVE STRUCTURES : Shielded or screened : Conduit or cable structure)
Patent 5028741: High frequency, power semiconductor device
(ELECTRICITY: CONDUCTORS AND INSULATORS : BOXES AND HOUSINGS : With electric device or mounting means therefor : Potted or encapsulated : Foil or flat lead-in)
Patent 5028742: Cable shield connector
(ELECTRICITY: CONDUCTORS AND INSULATORS : CONDUITS, CABLES OR CONDUCTORS : Combined : With joints : Plural conductor and/or duct : Spark plugs)
Patent 5028743: Printed circuit board with filled throughholes
(ELECTRICITY: CONDUCTORS AND INSULATORS : CONDUITS, CABLES OR CONDUCTORS : Preformed panel circuit arrangement (e.g., printed circuit) : With particular conductive connection (e.g., crossover) : Feedthrough : Voidless (e.g., solid) :)
Patent 5028744: Digitizer with illuminable working surface
(TELEGRAPHY : SYSTEMS : Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) : Writing digitizer pad : With illumination : Having shield)
Patent 5028745: Position detecting apparatus
(TELEGRAPHY : SYSTEMS : Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) : Writing digitizer pad : Inductive : Revertive signaling)
Patent 5028746: Cable protector for wound cable
(ELECTRICITY: TRANSMISSION TO VEHICLES : FLEXIBLE EXTENSIONS : Reels : Alternating direct)
Patent 5028747: Distributor cap
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : PERIODIC : Distributor cap detail : Timer)
Patent 5028748: Limit switch
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : LIMIT SWITCH : Locked cover prevents access to actuator)
Patent 5028749: Pressure switch
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : SPECIAL APPLICATION : Pneumatic tire inflation responsive : Fluid pressure actuated : Diameter sensing)
Patent 5028750: Impact sensor
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : SPECIAL APPLICATION : Change of inclination or of rate of motion responsive (e.g., inertia and tilt switches) : Magnetic holding means : Conducting)
Patent 5028751: Leaf switch
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : ELECTRIC SWITCH DETAILS : Contact : Leaf spring support : Contact making surface (e.g., grooved))
Patent 5028752: Push button device
(ELECTRICITY: CIRCUIT MAKERS AND BREAKERS : ELECTRIC SWITCH DETAILS : Actuators : Push button : Having auxiliarly housing)
Patent 5028753: Microwaveable coffee maker
(ELECTRIC HEATING : MICROWAVE HEATING : Fluid heater : Beverage (e.g., coffee, etc.) : Tunnel type)
Patent 5028754: Cooking hood for making sponge cake
(ELECTRIC HEATING : MICROWAVE HEATING : Cookware (e.g., vessel, utensil, etc.) : With cover : By fluent material (e.g., steaming, boiling, or frying, etc.))
Patent 5028755: Spark erosion machine tool
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : Cutting or disintegrating (e.g., machining engraving) : Electric spark machining : Vibrating electrodes or workpiece : Portable)
Patent 5028756: Electrode wire for electric spark cutting
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : Cutting or disintegrating (e.g., machining engraving) : Electric spark machining : Wire cutting : Portable)
Patent 5028757: Sealing structure for use in wire cut electric discharge machining apparatus
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : Cutting or disintegrating (e.g., machining engraving) : Electric spark machining : Wire cutting : Portable)
Patent 5028758: Wire cut electric discharge machine
(ELECTRIC HEATING : METAL HEATING (E.G., RESISTANCE HEATING) : Cutting or disintegrating (e.g., machining engraving) : Electric spark machining : Wire cutting : Portable)
Patent 5028759: Low emissivity film for a heated windshield
(ELECTRIC HEATING : HEATING DEVICES : Combined with diverse-type art device : Vehicle or vehicle component : Windshield or window : Nickel or chromium)
Patent 5028760: Infrared heater
(ELECTRIC RESISTANCE HEATING DEVICES : : Radiant heater : Radiant extended surface type heater : With heat radiating panel : On ceramic support structure)
Patent 5028761: Food service cart with a heating system, and trays and casseroles for such a food service cart
(ELECTRIC HEATING : HEATING DEVICES : Combined with container, enclosure, or support for material to be heated : Portable or mobile : Resilient means)
Patent 5028762: Electric hotplate
(ELECTRIC HEATING : HEATING DEVICES : Combined with container, enclosure, or support for material to be heated : Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.) : Having support for a heating unit : Ring having a flange overlaying hole in a surrounding support surface : Reflector-type)
Patent 5028763: High heat dissipation PTC heater structure
(ELECTRIC HEATING : HEATING DEVICES : With heater-unit housing, casing, or support means (e.g., frame and single sheet) : With heat storage or transfer means (vanes) : Cloth or other fabric)
Patent 5028764: Calculating instrument and method therefor
(REGISTERS : CALCULATORS : Adding pencils : Decimal elimination)
Patent 5028765: Give-a-way and cribbage game board
(REGISTERS : PEG TALLY BOARDS : Transportation time-distance schedules)
Patent 5028766: Automated rental system
(REGISTERS : SYSTEMS CONTROLLED BY DATA BEARING RECORDS : Credit or identification card systems : With vending : Lost-motion mechanism)
Patent 5028767: Sealed holder for IC card
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Electrical contact : With tabular chart, scale, or graph)
Patent 5028768: System for reading and encoding a magnetic track carried by a manually-displaced supporting document
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Magnetic : Raised or depressed portions on record)
Patent 5028769: Device for reading a mold code on a glass bottle
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Strengthen or diminish field or flux)
Patent 5028770: Bar code reading apparatus with laser selection based on a deflector position
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Specific scanning detail (e.g., scanner with a specific scanning field of view) : Moving a spot of light (e.g., flying spot scanner) : Using a moving mirror :)
Patent 5028771: Bar code reader
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Light level adaptation : Matrix of cells)
Patent 5028772: Scanner to combine partial fragments of a complete code
(REGISTERS : CODED RECORD SENSORS : Particular sensor structure : Optical : Bar code : Bar code stitching (e.g., forming a complete bar code from several partial scans) : Including an imager (e.g., CCD or camera-type reader))
Patent 5028773: Lens controller includes a zooming optical system and a zooming speed control device
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Automatic focus control : Using diffractometers)
Patent 5028774: Method and apparatus for detecting and measuring the refractive index of an optical disc substrate
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Polarizing : Inanimate article)
Patent 5028775: Optical time domain reflectometer using optical element with three control modes of oscillation, attenuation and amplification
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light conductor : Condition responsive light guide (e.g., light guide is physically affected by parameter sensed which results in light conveyed to the photocell) : With detection of macroscopic break in fiber : Vacuum tube type)
Patent 5028776: High hat actuating system with photoelectric control means
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light valve (e.g., iris diaphragm) : Inanimate article)
Patent 5028777: Method for mass-spectroscopic examination of a gas mixture and mass spectrometer intended for carrying out this method
(RADIANT ENERGY : IONIC SEPARATION OR ANALYSIS : Methods : Plural detectors)
Patent 5028778: Surface analysis method and a device therefor
(RADIANT ENERGY : ELECTRON ENERGY ANALYSIS : Radioactive tracer methods)
Patent 5028779: Corona charging device
(RADIANT ENERGY : CORONA IRRADIATION : Charging of moving object : With conveying means)
Patent 5028780: Preparation and observation method of micro-section
(RADIANT ENERGY : INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES : Methods : Magnetic field path-bending means)
Patent 5028781: Density correcting method and apparatus for subtraction image
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With image recording : For specialized application : With detector control or regulating)
Patent 5028782: Method of adjusting image processing conditions
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With image read-out : Including emission detection : With adjustment of conditions :)
Patent 5028783: Shading elimination method for an image read-out apparatus
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With image read-out : Including emission detection : With adjustment of conditions :)
Patent 5028784: Method for generating radiation image signals, image processing method, and radiation image read-out apparatus
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With image read-out : For specialized application)
Patent 5028785: Radiation image recording and read-out apparatus
(RADIANT ENERGY : SOURCE WITH RECORDING DETECTOR : Using a stimulable phosphor : With conveyance : With a recirculation path : With adjustment of conditions)
Patent 5028786: Array for a nuclear radiation and particle detector
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Superconducting type : With conveyance)
Patent 5028787: Non-invasive measurement of blood glucose
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Infrared responsive : With selection of plural discrete wavelengths or bands : With radiation source : Using sample absorption for chemical composition analysis : Including Fourier transform infrared spectrometry)
Patent 5028788: X-ray sensor array
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Semiconductor system : Imaging system : X-ray or gamma-ray system : With a collimator)
Patent 5028789: System and apparatus for neutron radiography
(RADIANT ENERGY : INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING : Neutron responsive means : Radiographic analysis : Spark chambers)
Patent 5028790: Apparatus for full-system zero check and window soiling measurement and correction for transmissometers
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Fluent material in optical path : Digital information)
Patent 5028791: Electron beam excitation ion source
(RADIANT ENERGY : ION GENERATION : Electron bombardment type : With means to convey or guide the target)
Patent 5028792: System for the visualization of exposure to ultraviolet radiation
(RADIANT ENERGY : INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING : Optical change type : Reticles, gun sights or with optical element)
Patent 5028793: Imaging screen for electrophoresis applications
(RADIANT ENERGY : INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING : Luminescent device : Requiring an additional energy source to cause luminescence : With optically-stimulated phosphor : Rotary motion)
Patent 5028794: Method for radiation detection and measurement
Patent 5028795: Ion implantation apparatus
(RADIANT ENERGY : IRRADIATION OF OBJECTS OR MATERIAL : Irradiation of semiconductor devices : With optical member of material to directly modify luminous energy)
Patent 5028796: Support belt for radiation shield garment
(RADIANT ENERGY : RADIATION CONTROLLING MEANS : Shields : Garments : Hand-held)
Patent 5028797: An alignment system for align first and second objects using alignment marks
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Photocell controls its own optical systems : Controlling web, strand, strip, or sheet : Self-luminous target)
Patent 5028798: Method and apparatus for determining the geometry of a body
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring dimensions : Volume : With moving reticle in optical path)
Patent 5028799: Method and apparatus for three dimensional object surface determination using co-planar data from multiple sensors
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : With circuit for evaluating a web, strand, strip, or sheet : Measuring dimensions : Profile : With triangulation : With detector support)
Patent 5028800: Two-beam photometer using specific beam chopper arrangement
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Fluent material in optical path : Plural paths : Tape, drum, or disc types)
Patent 5028801: Apparatus and method for multiplexing fiber optic sensors
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Light conductor : Optical delay line : Light amplifier type)
Patent 5028802: Imaging apparatus and methods utilizing scannable microlaser source
(RADIANT ENERGY : PHOTOCELLS; CIRCUITS AND APPARATUS : Optical or pre-photocell system : Means for moving optical system : Repetitious path : Rotary)
Patent 5028803: Integrated drive generator system with direct motor drive prime mover starting
(PRIME-MOVER DYNAMO PLANTS : ELECTRIC CONTROL : Starting and generating dynamo : Standby service)
Patent 5028804: Brushless doubly-fed generator control system
(PRIME-MOVER DYNAMO PLANTS : ELECTRIC CONTROL : Engine control : Control in response to generator and prime mover conditions : Stop cranking responsive to generator output)
Patent 5028805: Starter device
(PRIME-MOVER DYNAMO PLANTS : ELECTRIC-STARTING MOTOR : Fluid-current motors)
Patent 5028806: Battery replacement system for battery-powered digital data handling devices
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : PLURAL SUPPLY CIRCUITS OR SOURCES : Substitute or emergency source : Storage battery or accumulator : Serially connected sources)
Patent 5028807: Load cell with base plate
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Mechanical force : Attainment of voltage, frequency or phase relationship)
Patent 5028808: Devices capable of sensing rotary motion
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Mechanical force : Speed, centrifugal or kinetic force : Direction of rotation :)
Patent 5028809: Computer bus structure permitting replacement of modules during operation
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : With operation facilitating feature : Switch contact conditioning : Responsive to physical condition)
Patent 5028810: Four quadrant synapse cell employing single column summing line
(STATIC INFORMATION STORAGE AND RETRIEVAL : FLOATING GATE : Multiple values (e.g., analog) : Overlays)
Patent 5028811: Circuit for controlling a power MOS transistor on an inductive load
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Current driver : Having inductive load (e.g., coil, etc.) : Sample and hold)
Patent 5028812: Multiplexer circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Phase shift by less than period of input : Variable or adjustable : With counter or shift register : Particular device at input, output, or in cross-coupling path)
Patent 5028813: Device for monitoring a clock signal
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By presence or absence pulse detection : Monitoring (e.g., failure detection, etc.) : With direction (i.e., positive or negative))
Patent 5028814: Low power master-slave S/R flip-flop 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) : Master-slave bistable latch : Including field-effect transistor : With digital element)
Patent 5028815: Clocked comparator with offset reduction
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL : By amplitude : Comparison between plural varying inputs : Differential input : With reference signal)
Patent 5028816: Electro-optic line narrowing of optical parametric oscillators
(OPTICAL: SYSTEMS AND ELEMENTS : OPTICAL FREQUENCY CONVERTER : Parametric oscillator : Third harmonic)
Patent 5028817: Tristable output buffer with state transition control
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Output switching noise reduction : With field effect-transistor : Depletion or enhancement)
Patent 5028818: Ground bounce limiting driver using non-linear capacitor
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Signal level or switching threshold stabilization : Bias or power supply level stabilization : With clocking)
Patent 5028819: High CMOS open-drain output buffer
(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 5028820: Series terminated ECL buffer circuit and method with an optimized temperature compensated output voltage swing
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY : Signal level or switching threshold stabilization : Temperature compensation : With clocking)
Patent 5028821: Programmable logic device with programmable inverters at input/output pads
(ELECTRONIC DIGITAL LOGIC CIRCUITRY : MULTIFUNCTIONAL OR PROGRAMMABLE (E.G., UNIVERSAL, ETC.) : Array (e.g., PLA, PAL, PLD, etc.) : Significant integrated structure, layout, or layout interconnections : With clocking)
Patent 5028822: Circuit arrangement for processing analogue electrical signals
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM : Utilizing a three or more electrode solid-state device : Field-effect transistor : Electron multiplier type)
Patent 5028823: Delay device with intermittent capacitor discharge
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Generating staircase output : Frequency multiplication (e.g., harmonic generation, etc.))
Patent 5028824: Programmable delay circuit
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Having specific delay in producing output waveform : Including significant compensation (e.g., temperature compensated delay, etc.) : Non-overlapping)
Patent 5028825: Self-powered SCR gate drive circuit with optical isolation
(ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS : SWITCHING SYSTEMS : Condition responsive : Light, heat, vibratory or radiant energy : Attainment of voltage, frequency or phase relationship)
Patent 5028826: Fan arrangement for a vehicular AC generator
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Vibration or noise suppression : Step-by-step)
Patent 5028827: Drive unit comprising an electric motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Drive mechanism : Motion conversion : Gearing : Ignition systems)
Patent 5028828: Dual drive mechanism with a redundant feature
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : With other elements : Drive mechanism : Motion conversion : Gearing : Ignition systems)
Patent 5028829: Compact motor mount for cassette drive
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Plural rotary elements : Motor-generator sets)
Patent 5028830: Rotor apparatus for axial field electromagnetic devices
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : DYNAMOELECTRIC : Rotary : Windings and core structure : Secondary windings or conductors : Squirrel cage : Wave)
Patent 5028831: SAW reflectionless quarter-wavelength transducers
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Surface acoustic wave devices : Orientation of piezoelectric material :)
Patent 5028832: Ultrasonic motor having anisotropic properties
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Combined with resonant structure : Direct mechanical coupling : Motor producing continual motion : Eliptical motion at fixed point (i.e., walking) or Ratchet and Pawl motor : Output member detail)
Patent 5028833: Ultrasonic motor
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : Combined with resonant structure : Direct mechanical coupling : Motor producing continual motion : Traveling wave motor : Armature : Oval track)
Patent 5028834: Device for magnifying displacement of piezoelectric element and method of producing same
(ELECTRICAL GENERATOR OR MOTOR STRUCTURE : NON-DYNAMOELECTRIC : Piezoelectric elements and devices : With mechanical energy coupling means : On back of piezoelectric element)
Patent 5028835: Thermionic energy production
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH TEMPERATURE MODIFIER : Pyroelectric type device : Plural control electrode units)
Patent 5028836: Color cathode ray tube of shadow mask type
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Shadow mask, support or shield : Monoscope)
Patent 5028837: Low energy ion trap
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Beam deflecting means : Ion trap : Including non-planar elements)
Patent 5028838: Grid assemblies for use in cathode ray tubes
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Ray generating or control : With support for electrode : With focus electrode adjacent cathode)
Patent 5028839: Fluorescent lamp for use in aquaria
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : With gaseous discharge medium : Phosphor on envelope wall : Including particular phosphor : Plural : Brillouin beam type)
Patent 5028840: Image display panel
(ELECTRIC LAMP AND DISCHARGE DEVICES : CATHODE RAY TUBE : Screen : Nonluminescent layer : Plural)
Patent 5028841: Chip mounting techniques for display apparatus
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH LUMINESCENT SOLID OR LIQUID MATERIAL : Solid-state type : With electrode matrix : Organic phosphor)
Patent 5028842: Device for chromatic conversion of an image obtained by electromagnetic radiation and manufacturing process thereof
(ELECTRIC LAMP AND DISCHARGE DEVICES : PHOTOSENSITIVE : Having phosphor screen : With details of high-voltage connector)
Patent 5028843: Compact discharge lamp for use in optical projection systems
(ELECTRIC LAMP AND DISCHARGE DEVICES : WITH GAS OR VAPOR : With particular gas or vapor : With metal vapor : Mercury vapor : And rare earth metal : With rare gas : With support)
Patent 5028844: DC discharge lamp lighting device
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL POWER SUPPLIES : Electric switch controlled by the radiant energy responsive device)
Patent 5028845: High-pressure series arc discharge lamp construction
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PLURAL SERIES CONNECTED LOAD DEVICES : Discharge device loads : Condenser in shunt to load and supply)
Patent 5028846: Single-ended ballast circuit
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PERIODIC SWITCH IN THE SUPPLY CIRCUIT : Periodic switch in the primary circuit of the supply transformer : Periodic switch selectively connectable to plural load device circuits)
Patent 5028847: Launcher suitable for exciting surface waves in a discharge tube
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : PULSATING OR A.C. SUPPLY : Induction-type discharge device load : Strobe lights)
Patent 5028848: Tile vector to raster conversion method
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With ray-deflecting stage interposed between plural concentrating or accelerating and/or de-accelerating stage or co-extensive with one such stage)
Patent 5028849: Device for measuring convergence of color cathode ray tube
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : Including color convergence control : Intermediate stage at lower potential)
Patent 5028850: Deflection system with a controlled beam spot
(ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS : CATHODE RAY TUBE CIRCUITS : Cathode-ray deflections circuits : With ray deflection distortion correction or reduction : By modulation of deflection waveform : Adjacent to or integral with deflection winding or housing structure therefor)
Patent 5028851: Vehicle steering system
(ELECTRICITY: MOTIVE POWER SYSTEMS : ELECTRIC MOTOR WITH NONMOTOR DRIVING MEANS (E.G., AXLE DRIVE, MANUAL DRIVE) : Manual driving means :)
Patent 5028852: Position detection for a brushless DC motor without hall effect devices using a time differential method
(ELECTRICITY: MOTIVE POWER SYSTEMS : SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS : Field circuit control)
Patent 5028853: Switch actuation circuit and arrangement
(ELECTRICITY: MOTIVE POWER SYSTEMS : MOTOR-REVERSING : Acceleration control)
Patent 5028854: Variable speed motor drive
(ELECTRICITY: MOTIVE POWER SYSTEMS : LIMITATION OF MOTOR LOAD, CURRENT, TORQUE OR FORCE (E.G., PREVENTING OVERLOAD) : Control of motor load or device driven)
Patent 5028855: Control process for a numerically controlled machine-tool or for a robot
(DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS : SPECIFIC APPLICATION, APPARATUS OR PROCESS : Product assembly or manufacturing : Particular manufactured product or operation : Machining : Digital positioning technique : For curve or contour : Tool/workpiece interference prevention)
Patent 5028856: Controlled linear motor
(ELECTRICITY: MOTIVE POWER SYSTEMS : POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) : With particular motor control system responsive to the "actuating signal" : Linear movement motors : Rotating amplifier (e.g., "Ward Leonard" control))
Patent 5028857: Method of controlling a bi-directional stepping motor and a bi-directional stepping motor adapted to be controlled by this method
(ELECTRICITY: MOTIVE POWER SYSTEMS : OPEN-LOOP STEPPING MOTOR CONTROL SYSTEMS : Having commutating switch-type transmitter)
Patent 5028858: Cordless dual-battery electric tool
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL DISCHARGING : Regulated discharging : With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.) : Time control)
Patent 5028859: Multiple battery, multiple rate battery charger
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : DIVERSE CHARGING OR DISCHARGING RATES FOR PLURAL BATTERIES : With generator charging source)
Patent 5028860: Battery charge apparatus controlled by detecting charge current with constant charge voltage
(ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING : BATTERY OR CELL CHARGING : With detection of current or voltage amplitude : Having solid-state control device : Detection of current and voltage amplitude : Detection of current and voltage amplitude)
Patent 5028861: Strobed DC-DC converter with current regulation
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : IN SHUNT WITH SOURCE OR LOAD : Using choke and switch across source : In bridge)
Patent 5028862: Voltage follower circuit for use in power level control circuits
(ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS : OUTPUT LEVEL RESPONSIVE : Using a three or more terminal semiconductive device as the final control device : Linearly acting : Switched (e.g., on-off control))
Patent 5028863: High voltage measuring device
(ELECTRICITY: MEASURING AND TESTING : TESTING POTENTIAL IN SPECIFIC ENVIRONMENT (E.G., LIGHTNING STROKE) : Superconductors)
Patent 5028864: Optically stable, large time bandwidth acousto-optic heterodyne spectrum analyzer with fixed non-zero heterodyne output
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Analysis of complex waves : Frequency spectrum analyzer : Nonscanning : With optics : Bragg cell : With space discharge device)
Patent 5028865: Device having main and secondary optical sensors
(ELECTRICITY: MEASURING AND TESTING : MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE : Using radiant energy : Conductive field (e.g., mercury))
Patent 5028866: Method and apparatus for mapping printed circuit fields
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : System sensing fields adjacent device under test (DUT) : Using time measuring)
Patent 5028867: Printed-wiring board
(ELECTRICITY: MEASURING AND TESTING : FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS : Of individual circuit component or element : Electrical connectors : With barrier layer)
Patent 5028868: Hall effect type sensing device and magnetic circuit device for a hall effect type sensor
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Displacement : Having particular sensor means : Hall effect : Electrically energized)
Patent 5028869: Process and apparatus for the nondestructive measuring of magnetic properties of a test body, by detecting a tangential magnetic field and
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : Hysteresis loop curve display or recording : Sensor supported, positioned, or moved within pipe)
Patent 5028870: Sensor system method and apparatus for discrimination of metallic objects based on a variation in self inductance
(ELECTRICITY: MEASURING AND TESTING : MAGNETIC : With means to create magnetic field to test material : Electrically energized nonforce type sensor : Oscillator type : Electrically energized)
Patent 5028871: Magnetic resonance imaging system
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Using a nuclear resonance spectrometer system : To obtain localized resonance within a sample :)
Patent 5028872: Magnetic resonance imaging system
(ELECTRICITY: MEASURING AND TESTING : PARTICLE PRECESSION RESONANCE : Spectrometer components : Including a test sample and control sample)
Patent 5028873: Tester for a reed relay printed circuit board
(ELECTRICITY: MEASURING AND TESTING : ELECTROMECHANICAL SWITCHING DEVICE : Relay : Shock testing)
Patent 5028874: Ratiometric measurement circuit with improved noise rejection
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : With auxiliary means to condition stimulus/response signals : For response signal evaluation or processing : Including a ratiometric function : Field effect transistor)
Patent 5028875: Linear rotary differential capacitance transducer
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using capacitive type measurement : With variable electrode area : Using a bridge circuit)
Patent 5028876: Precision capacitive transducer circuits and methods
(ELECTRICITY: MEASURING AND TESTING : IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS : Lumped type parameters : Using capacitive type measurement : With pulse signal processing circuit : Including charge or discharge cycle circuit : Including a tuned or resonant circuit)
Patent 5028877: Circuit arrangement for a fast Fourier transform
(ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING : ELECTRICAL DIGITAL CALCULATING COMPUTER : Particular function performed : Transform : Fourier : Fast Fourier Transform (i.e., FFT) :)
Patent 5028878: Dual memory timing system for VLSI test systems
(MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS : SIGNAL CONVERTING, SHAPING, OR GENERATING : Synchronizing : With counter : Phase lock loop)
Patent 5028879: Compensation of the gate loading loss for travelling wave power amplifiers
(AMPLIFIERS : WITH DISTRIBUTED PARAMETER-TYPE COUPLING MEANS : Distributed amplifier : Having different configurations)
Patent 5028880: Microwave power amplifier using phase inverters
(AMPLIFIERS : SIGNAL FEEDBACK : Plural amplifier channels : Including D.C. path for signal feedback)
Patent 5028881: Highly linear operational transconductance amplifier with low transconductance
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having field effect transistor :)
Patent 5028882: Multiple output operational amplifier
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having gain control means :)
Patent 5028883: Tone controller for attenuating noise in the signal generated by receiver from weak electric field, and receiver having the tone
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including differential amplifier : Having gain control means :)
Patent 5028884: Leapfrog filter having adjustable center frequency and quality factor
(AMPLIFIERS : WITH SEMICONDUCTOR AMPLIFYING DEVICE (E.G., TRANSISTOR) : Including frequency-responsive means in the signal transmission path : And tuning means : Having emitter degeneration)
Patent 5028885: Phase-locked loop signal generation system with control maintenance
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : AFC with logic elements : Reactance device (e.g., variable capacitors, saturable inductors, reactance tubes, etc.))
Patent 5028886: Swept frequency slope correction system for synthesized sweeper
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : Search sweep of oscillator :)
Patent 5028887: Direct digital synthesizer driven phase lock loop frequency synthesizer with hard limiter
(OSCILLATORS : AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR FREQUENCY SENSING MEANS : With reference oscillator or source : Motor control of oscillator)
Patent 5028888: Multistage current-controlled oscillator
(OSCILLATORS : RING OSCILLATORS : Parallel connected)
Patent 5028889: Oscillator having a limiter composed of a symmetric active clamp
(OSCILLATORS : AMPLITUDE CONTROL OR STABILIZATION : Automatic : Self-quenched)
Patent 5028890: Voltage driven microwave amplitude modulation system
(MODULATORS : AMPLITUDE MODULATOR : Including stabilization or alternatively distortion, noise or other interference prevention, reduction or compensation : Reduction or compensation of nonlinearity in modulation characteristic : Push-pull circuit)
Patent 5028891: Arrangement for supplying power to a hollow waveguide intended for electromagnetic microwaves
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Balanced to unbalanced circuits : Having long line elements : Using waveguide)
Patent 5028892: Analog phase shifter
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Delay lines including long line elements : Control of delay with semiconductive means : Having plural concentric helices)
Patent 5028893: Switched capacitor filters with continuous time control
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Frequency domain filters utilizing only lumped parameters : Synchronous filters : With variable response)
Patent 5028894: Bandpass filter circuit arrangement
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Frequency domain filters utilizing only lumped parameters : With variable response : With variable response)
Patent 5028895: Notch filter for reducing clock signal feedthrough effects in an acoustic charge transport device
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Frequency domain filters utilizing only lumped parameters : Resonant, discrete frequency selective type : Including specific frequency rejection means : Including waveguide element)
Patent 5028896: Stripline circuit
(WAVE TRANSMISSION LINES AND NETWORKS : LONG LINE ELEMENTS AND COMPONENTS : Strip type : Including spaced, electrically compensated, internal support means)
Patent 5028897: Microwave transmission arrangement
(WAVE TRANSMISSION LINES AND NETWORKS : LONG LINE ELEMENTS AND COMPONENTS : Waveguide elements and components : Semiconductor mounts)
Patent 5028898: Color cathode-ray tube having deflection yoke
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Electron or ion beam deflecting type : Pivoted or relatively movable independently of the armature)
Patent 5028899: Clamp for fixing deflection yoke assembly
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Electron or ion beam deflecting type : Pivoted or relatively movable independently of the armature)
Patent 5028900: Damper for a rotary solenoid
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : With magneto-mechanical motive device (e.g., electromagnet with armature) : With motion-conversion means (e.g., reciprocating to rotary motion) : Induced current-type movable conductor (e.g., eddy current member))
Patent 5028901: Magazine for coordinate measuring apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : STATIC PRESENTATION PROCESSING (E.G., PROCESSING DATA FOR PRINTER, ETC.) : Detail of image placement or content : Page or frame memory)
Patent 5028902: Permanent magnet field sources of radial orientation
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Magnet structure or material : Permanent magnets : Plural magnets : With outer casing or housing)
Patent 5028903: Spherical permanent magnet with equatorial access
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : Magnet structure or material : Permanent magnets : Plural magnets : With outer casing or housing)
Patent 5028904: Inductance coil
(INDUCTOR DEVICES : WITH OUTER CASING OR HOUSING : Potted type : Angularly movable)
Patent 5028905: High voltage coil having split plastic tubes
(INDUCTOR DEVICES : COIL OR COIL TURN SUPPORTS OR SPACERS : Coil turns cemented to support or embedded in plastic : Coils of different windings interposed)
Patent 5028906: Humidity sensor
(ELECTRICAL RESISTORS : RESISTANCE VALUE RESPONSIVE TO A CONDITION : Gas, vapor, or moisture absorbing or collecting : Humidity : Terminal forms casing or housing)
Patent 5028907: Improper towing alarm device
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : Internal alarm or indicator responsive to a condition of the vehicle : Curb)
Patent 5028908: Control circuit for vehicle taillights
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : External signal light system : Brake light : With plural bulbs sequentially flashed)
Patent 5028909: Golf bag alarm
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Article placement or removal (e.g., anti-theft) : Sporting equipment (e.g., golfbag, club, cart, or skis) : Specified connector (e.g., phone jack-type plug))
Patent 5028910: Drain overflow alarm
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Fluent material : Material level : Overflow : Having means locking device to article)
Patent 5028911: Acoustically responsive portable emergency light
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specified indicator structure : Control circuit detail : Diverse)
Patent 5028912: Display apparatus for automotive vehicle
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : IMAGE SUPERPOSITION BY OPTICAL MEANS (E.G., HEADS-UP DISPLAY) : Three-dimensional arrays)
Patent 5028913: Angle adjusting device in display device
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : Including display support : Fluid)
Patent 5028914: Method and apparatus for waveform digitization
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Graph generating : Real-time waveform display : Image based (addressing))
Patent 5028915: Device for controlling a display with a plurality of strings of light-emitting elements
(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) : Solid body light emitter (e.g., LED) : Optical addressing (e.g., photodetection))
Patent 5028916: Active matrix display device
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Display elements arranged in matrix (e.g., rows and columns) : Light-controlling display elements : Liquid crystal display elements (LCD) : Control means at each display element : Including transformer)
Patent 5028917: Image display device
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY DRIVING CONTROL CIRCUITRY : Intensity or color driving control (e.g., gray scale) : Having common base or substrate)
Patent 5028918: Identification transponder circuit
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Interrogation response : Additional control : Programming (e.g., read/write) : Audible)
Patent 5028919: Learning remote control device
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Frequency responsive actuation : Wireless link : Radio link)
Patent 5028920: Driver alerting device
(COMMUNICATIONS: ELECTRICAL : EXTERNAL CONDITION VEHICLE-MOUNTED INDICATOR OR ALARM : Transmitter in one vehicle only : Relative distence between vehicles (e.g., collision alert))
Patent 5028921: Vehicle detector method and system
(COMMUNICATIONS: ELECTRICAL : VEHICLE DETECTORS : Environmental or drift compensation : Electromechanical movable auxiliary indicator)
Patent 5028922: Multiplexed encoder and decoder with address mark generation/check and precompensation circuits
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : To or from run length limited codes : Binary to or from ternary)
Patent 5028923: ISO/EIA code converting method
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Coding by table look-up techniques : "N" out of "M" to "X" out of "Y")
Patent 5028924: Digital correction of gain mismatch in a sigma delta modulator
(CODED DATA GENERATION OR CONVERSION : CONVERTER COMPENSATION : Synchro or resolver signal)
Patent 5028925: Sigma-delta converter with improved transfer function
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Differential encoder and/or decoder (e.g., delta modulation, differential pulse code modulation) : Linearization (e.g., nonlinear transfer characteristic compensates for nonlinear transducer))
Patent 5028926: Successive type analog-to-digital converter with a variable reference voltage for the digital to analog converter
(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 5028927: Signal processing device for analogue to digital conversion
(CODED DATA GENERATION OR CONVERSION : QUANTIZER : With rotary distributor)
Patent 5028928: Ultra-stable, stressed-skin inflatable target support systems
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR REFLECTOR : Inflatable or collapsable : Decoy or tow target)
Patent 5028929: Icing hazard detection for aircraft
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR FOR METEOROLOGICAL USE (EPO) : Mounted on aircraft (EPO) : Particular SAR processing techniques (e.g., squint mode, doppler beam-sharpening mode, spotlight mode, bistatic SAR, inverse SAR) (EPO))
Patent 5028930: Coupling matrix for a circular array microwave antenna
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including a steerable array : With a matrix : Controlled)
Patent 5028931: Adaptive array processor
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Utilizing correlation techniques : Sum of each antenna signal : Mixing each antenna channel signal)
Patent 5028932: Inverted delta high efficiency loop antenna for all high frequencies
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Single adjustable length electrically long linear antenna : Light)
Patent 5028933: Radial waveguide channel electronic scan antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Slot type : Plural : With wave guide coupling :)
Patent 5028934: Hand-held portable printing system
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Record receiver and transfer medium feeding or driving means : Specific conductor means (e.g., electrode, conducting pattern, etc.))
Patent 5028935: Wide format thermal recording device
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Specific resistance recording element type : Head substrate : Using pulse width modulation)
Patent 5028936: Pulsed droplet deposition apparatus using unpoled crystalline shear mode actuator
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With piezoelectric force ejection : Shear mode : Flow path)
Patent 5028937: Perforated membranes for liquid contronlin acoustic ink printing
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Discharge means : Free surface : Movement)
Patent 5028938: Printing head
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Specific electrostatic head : Composition : Block driving)
Patent 5028939: Spatial light modulator system
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Electrostatic : Photo scanning : Dot density or dot size control (e.g., halftone) : Laminated head including charged particle generation layer)
Patent 5028940: Camera apparatus for magnetically recording on film
(PHOTOGRAPHY : WITH DATA RECORDING : Magnetically on film or film cassette : Recording head position control : Having auxiliary illumination)
Patent 5028941: Video camera support structure
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Support or housing : Portable or hand-held : Periodic shuttering)
Patent 5028942: Photographic data recording apparatus
(PHOTOGRAPHY : WITH DATA RECORDING : Optical : Segmented alphanumeric indicia : Having auxiliary illumination)
Patent 5028943: Camera with electronic flash unit
(PHOTOGRAPHY : WITH OBJECT ILLUMINATION FOR EXPOSURE : Having flash built into camera : Diaphragm function only)
Patent 5028944: Film advancement control device
(PHOTOGRAPHY : WITH FILM DRIVE : Having significant electronic circuit detail : Rewind)
Patent 5028945: Electric zoom camera
(PHOTOGRAPHY : HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE : Power zoom : Speed control or step driving : Focus position adjusted according to focal length)
Patent 5028946: Shutter for a single lens reflex camera
(PHOTOGRAPHY : CAMERA DETAIL : Shutter : Pivoting or rotating blade type : Rectilinear reciprocation)
Patent 5028948: Photoelectric transducer apparatus for focus detection
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having accumulation photoarray and time control means : With mechanical rangefinder)
Patent 5028949: Single-lens reflex camera provided with triangulation distance measuring device and strobe device
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Having auxiliary illumination : With mechanical rangefinder)
Patent 5028950: Dual stage 3D printer
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Stereoscopic : Having document handling detection)
Patent 5028951: Copying apparatus
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Photographing on both sides of photo-sensitive paper : Book page copying)
Patent 5028952: Apparatus for the formation of images
(PHOTOCOPYING : USING MICROCAPSULES : Exposure : Of selected area or border :)
Patent 5028953: Image forming apparatus having sheet feeding condition detecting means
(PHOTOCOPYING : USING MICROCAPSULES : Exposure : Using mask original :)
Patent 5028954: Image recording apparatus
(PHOTOCOPYING : USING MICROCAPSULES : Condition responsive control :)
Patent 5028955: Exposure apparatus
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Step and repeat : Reflector between original and photo-sensitive paper)
Patent 5028956: Film clamp
(PHOTOCOPYING : PROJECTION PRINTING AND COPYING CAMERAS : Detailed holder for photosensitive paper : Including shutter, diaphragm, polarizer or filter)
Patent 5028957: Image forming apparatus with an image reading function
(ELECTROPHOTOGRAPHY : COMBINED WITH DIVERSE SUBJECT MATTER : With diverse image formation : Electrostatic : Light (e.g., laser, LED, LCD) :)
Patent 5028958: Copying apparatus with simultaneous multi-color single cycle copying
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Exposure : Having image editing : Selectable area : Color : Optical detector)
Patent 5028959: Vacuum collection system for dirt management
(ELECTROPHOTOGRAPHY : INTERNAL MACHINE ENVIRONMENT : Forced air circulation : Having filtering (e.g., ozone removal) : Having priority interrupt)
Patent 5028960: Image density control method for an image forming apparatus
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of developing : Concentration control : Detection of developed image : On or adjacent to platen)
Patent 5028961: Development apparatus having a developer material storage chamber which automatically discharges upon operation of the mixer
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Developing unit : Drum mount)
Patent 5028963: Image forming apparatus
(PHOTOCOPYING : USING MICROCAPSULES : Condition responsive control :)
Patent 5028964: Imaging system with rigidizer and intermediate transfer member
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Copy : Feeding to transfer position : Having treatment of copy medium : Length adjustment)
Patent 5028965: Copying system having a sheet refeed device
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Copy : Delivering from transfer position : Re-fed for additional image : Having intermediate storage : Cyclically (e.g., with movement of copy))
Patent 5028966: Image-forming machine
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Process cartridge unit : Having subunit separation : Toner cartridge)
Patent 5028967: Achromatic lens for ultraviolet rays
(OPTICAL: SYSTEMS AND ELEMENTS : HAVING SIGNIFICANT INFRARED OR ULTRAVIOLET PROPERTY : Lens, lens system or component : Regenerative)
Patent 5028968: Radiation hard GaAs high electron mobility transistor
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : HETEROJUNCTION DEVICE : Field effect transistor : Doping on side of heterojunction with lower carrier affinity (e.g., high electron mobility transistor (HEMT)) : Layer is a group III-V semiconductor compound)
Patent 5028969: Semiconductor device for a space modulation matrix and method for driving a space modulation matrix
(ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) : INCOHERENT LIGHT EMITTER STRUCTURE : In combination with or also constituting light responsive device : In array having structure for use as imager or display, or with transparent electrode)
Patent 5028970: Image 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)
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