Panasonic Holdings Corp
PanasonicActive Patents
0
Total Holdings
263
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US20040059531A1 | Remote control receiving system | Expired / Lapsed | 2003-08-08 | — | 12 | Details |
| EP0971545A1 | Image processing method, image processing device, and data … | Expired / Lapsed | 1998-01-09 | — | 22 | Details |
| EP0708563A2 | Image encoding/decoding device | Expired / Lapsed | 1995-10-19 | — | 24 | Details |
| EP0619677A2 | System for scrambling a digital video signal | Expired / Lapsed | 1994-04-08 | — | 26 | Details |
| EP0551646A2 | Concatenated block and convolution encoder-decoder | Expired / Lapsed | 1992-12-23 | — | 9 | Details |
| EP0539136A2 | Voltage generating device | Expired / Lapsed | 1992-10-19 | — | 8 | Details |
| EP0514887A2 | Vehicle position detecting apparatus | Expired / Lapsed | 1992-05-21 | — | 13 | Details |
| EP0283044A2 | Laser apparatus | Expired / Lapsed | 1988-03-18 | — | 26 | Details |
| JPH0198140A | optical card | Expired / Lapsed | 1987-10-09 | — | 0 | Details |
| JPS6442010A | Magnetic head | Expired / Lapsed | 1987-08-07 | — | 0 | Details |
| JPS63115546A | Ultrasonic probe | Expired / Lapsed | 1986-10-31 | — | 0 | Details |
| JPS6350918A | Information recording and reproducing device | Expired / Lapsed | 1986-08-20 | — | 0 | Details |
| EP0190948A2 | Ultrasonic probe | Expired / Lapsed | 1986-02-10 | — | 18 | Details |
| EP0178606A2 | Molecular controlled structure and method of manufacturing … | Expired / Lapsed | 1985-10-11 | — | 9 | Details |
| JPS6237950A | Electronic-part mounting package | Expired / Lapsed | 1985-08-12 | — | 0 | Details |
| JPS61258661A | Linear motor | Expired / Lapsed | 1985-05-07 | — | 0 | Details |
| JPS61201693A | How diamonds are made | Expired / Lapsed | 1985-03-05 | — | 0 | Details |
| EP0142862A2 | Ultrasonic probe having a liquid-containing housing formed … | Expired / Lapsed | 1984-11-20 | — | 10 | Details |
| JPS6140579A | Leading vehicle identification method and device | Expired / Lapsed | 1984-08-02 | — | 0 | Details |
| EP0129878A2 | Ultrasonic probe having dual-motion transducer | Expired / Lapsed | 1984-06-22 | — | 17 | Details |
| JPS60160418A | portable electronic devices | Expired / Lapsed | 1984-01-31 | — | 0 | Details |
| JPS60108804A | Optical fiber probe | Expired / Lapsed | 1983-11-18 | — | 0 | Details |
| JPS6052079A | semiconductor laser equipment | Expired / Lapsed | 1983-09-01 | — | 0 | Details |
| JPS6025213A | Method of producing film capacitor | Expired / Lapsed | 1983-07-21 | — | 0 | Details |
| JPS601681A | feeding device | Expired / Lapsed | 1983-06-20 | — | 0 | Details |
| EP0077552A1 | Colored oil | Expired / Lapsed | 1982-10-16 | — | 8 | Details |
| EP0048441A2 | Track searching arrangement for an optical information reco… | Expired / Lapsed | 1981-09-16 | — | 4 | Details |
| JPS5826214A | Run information device | Expired / Lapsed | 1981-08-08 | — | 0 | Details |
| JPS5841A | Heat exchanger utilizing pipe heater | Expired / Lapsed | 1981-06-22 | — | 0 | Details |
| JPS5780263A | Circuit for inhibiting inrush current | Expired / Lapsed | 1980-11-05 | — | 0 | Details |
| JPS5744344A | Selective call receiver | Expired / Lapsed | 1980-08-29 | — | 0 | Details |
| DE3030340A1 | LIQUID JET WRITING DEVICE WITH A HUMIDIFIER FOR THE WRITING… | Expired / Lapsed | 1980-08-11 | — | 0 | Details |
| JPS575006A | Optical branching filter | Expired / Lapsed | 1980-06-12 | — | 0 | Details |
| JPS5689072A | Ultrasonic distance measuring apparatus | Expired / Lapsed | 1979-12-21 | — | 0 | Details |
| JPS5683259A | Linear stepping motor | Expired / Lapsed | 1979-12-11 | — | 0 | Details |
| JPS5671278A | Lithium-iodine complex battery with solid electrolyte | Expired / Lapsed | 1979-11-14 | — | 0 | Details |
| JPS5616936A | Driving unit for rotating magnetic head | Expired / Lapsed | 1979-07-18 | — | 0 | Details |
| JPS56720A | Antenna unit | Expired / Lapsed | 1979-06-14 | — | 0 | Details |
| DE2913957A1 | PIEZOELECTRIC SPEAKER | Expired / Lapsed | 1979-04-06 | — | 0 | Details |
| JPS55126811A | Laser gyroscope | Expired / Lapsed | 1979-03-26 | — | 0 | Details |
| JPS5576041A | Amorphous alloy | Expired / Lapsed | 1978-11-30 | — | 0 | Details |
| JPS5516544A | Channel selector | Expired / Lapsed | 1978-07-20 | — | 0 | Details |
| DE2810054A1 | ELECTRONIC CIRCUIT DEVICE AND METHOD OF MANUFACTURING IT | Expired / Lapsed | 1978-03-08 | — | 0 | Details |
| JPS5340505A | Magnetic recordinf medium | Expired / Lapsed | 1976-09-25 | — | 0 | Details |
| DE2621457A1 | MICROWAVE OVEN | Expired / Lapsed | 1976-05-14 | — | 0 | Details |
| JPS5271614A | Rotary electric machine | Expired / Lapsed | 1975-12-12 | — | 0 | Details |
| JPS5249451A | Method of manufacturing film capacitor | Expired / Lapsed | 1975-10-17 | — | 0 | Details |
| JPS5231721A | Electronic musical instruments | Expired / Lapsed | 1975-07-25 | — | 0 | Details |
| FR2024264A1 | FR2024264A1 - - Google Patents | Expired / Lapsed | 1969-11-25 | — | 0 | Details |
| FR2012981A1 | FR2012981A1 - - Google Patents | Expired / Lapsed | 1969-07-11 | — | 0 | Details |
| DE1913731A1 | Tape cassette adapter | Expired / Lapsed | 1969-03-18 | — | 0 | Details |
| DE1762582B2 | TIME MULTIPLEX SYSTEM FOR THE SIMULTANEOUS TRANSMISSION OF … | Expired / Lapsed | 1968-07-12 | — | 0 | Details |
| DE1463426A1 | DC-powered synchronous motor synchronized with a signal fre… | Expired / Lapsed | 1963-10-16 | — | 0 | Details |
| US6839898B2 | Disk drive | Expired / Lapsed | 2002-04-26 | 2005-01-04 | 19 | Details |
| US6372286B1 | Barium strontium titanate integrated circuit capacitors and… | Expired / Lapsed | 1994-07-19 | 2002-04-16 | 12 | Details |
| US5887178A | Idle state detector and idle state detecting method for a m… | Expired / Lapsed | 1995-08-28 | 1999-03-23 | 33 | Details |
| US5828809A | Method and apparatus for extracting indexing information fr… | Expired / Lapsed | 1996-10-01 | 1998-10-27 | 52 | Details |
| USD390548S | Computer screen with a set of icons | Expired / Lapsed | 1996-11-29 | 1998-02-10 | 1 | Details |
| US5646937A | Code division multiple access communication system | Expired / Lapsed | 1995-08-18 | 1997-07-08 | 17 | Details |
| US5596243A | Crystal oscillator | Expired / Lapsed | 1994-10-05 | 1997-01-21 | 18 | Details |
| US5568635A | Physical memory allocation system, program execution schedu… | Expired / Lapsed | 1994-02-23 | 1996-10-22 | 7 | Details |
| US5463609A | Information recording and reproducing device and a method u… | Expired / Lapsed | 1993-10-20 | 1995-10-31 | 31 | Details |
| US5446785A | Telephone terminal equipment in which telephone numbers of … | Expired / Lapsed | 1993-05-25 | 1995-08-29 | 21 | Details |
| US5430736A | Method and apparatus for generating test pattern for sequen… | Expired / Lapsed | 1992-04-15 | 1995-07-04 | 36 | Details |
| US5428597A | Multi-layered optical disk with track and layer identificat… | Expired / Lapsed | 1994-01-12 | 1995-06-27 | 20 | Details |
| US5412631A | Optical head apparatus for storing, reading or erasing info… | Expired / Lapsed | 1993-07-08 | 1995-05-02 | 61 | Details |
| US5377682A | Ultrasonic probe for transmission and reception of ultrason… | Expired / Lapsed | 1992-09-04 | 1995-01-03 | 21 | Details |
| US5367316A | Remote-control apparatus for electronics apparatus | Expired / Lapsed | 1994-02-14 | 1994-11-22 | 15 | Details |
| US5303225A | Multi-layered optical disk with track and layer identificat… | Expired / Lapsed | 1990-10-11 | 1994-04-12 | 17 | Details |
| US5263011A | Optical recording and reproducing apparatus and recording m… | Expired / Lapsed | 1991-10-30 | 1993-11-16 | 6 | Details |
| US5252174A | Method for manufacturing substrates for depositing diamond … | Expired / Lapsed | 1992-05-28 | 1993-10-12 | 6 | Details |
| US5249175A | Optical information recording medium and information record… | Expired / Lapsed | 1992-04-09 | 1993-09-28 | 28 | Details |
| US5227707A | Interference avoiding system of multi robot arms | Expired / Lapsed | 1992-08-28 | 1993-07-13 | 7 | Details |
| US5216646A | Tracking system in recording/reproducing apparatus | Expired / Lapsed | 1989-11-13 | 1993-06-01 | 10 | Details |
| US5214635A | Erasable optical disk and optical information recording/rep… | Expired / Lapsed | 1992-02-14 | 1993-05-25 | 9 | Details |
| US5212731A | Apparatus for providing sentence-final accents in synthesiz… | Expired / Lapsed | 1990-09-17 | 1993-05-18 | 26 | Details |
| US5163432A | Catheter type laser illuminating apparatus | Expired / Lapsed | 1991-07-15 | 1992-11-17 | 11 | Details |
| US5161537A | Ultrasonic diagnostic system | Expired / Lapsed | 1991-03-20 | 1992-11-10 | 6 | Details |
| US5158473A | Connector | Expired / Lapsed | 1991-06-20 | 1992-10-27 | 6 | Details |
| US5151008A | Substrate transfer apparatus | Expired / Lapsed | 1991-05-21 | 1992-09-29 | 4 | Details |
| US5134604A | Combination optical data medium with multiple data surfaces… | Expired / Lapsed | 1991-01-03 | 1992-07-28 | 8 | Details |
| US5097464A | Optical recording medium and optical recording/reproducing … | Expired / Lapsed | 1990-07-24 | 1992-03-17 | 22 | Details |
| US5053998A | Semiconductor memory device with dual drivers to sense amp … | Expired / Lapsed | 1990-03-15 | 1991-10-01 | 12 | Details |
| US5027115A | Pen-type computer input device | Expired / Lapsed | 1990-08-31 | 1991-06-25 | 6 | Details |
| US5013954A | Electrostatic micro-motor apparatus | Expired / Lapsed | 1990-06-11 | 1991-05-07 | 7 | Details |
| US5013135A | Head-up display with two fresnel lenses | Expired / Lapsed | 1990-03-20 | 1991-05-07 | 16 | Details |
| US4968524A | Process for producing a polyacetylene | Expired / Lapsed | 1988-10-12 | 1990-11-06 | 15 | Details |
| US4908299A | Pattern forming method | Expired / Lapsed | 1988-12-30 | 1990-03-13 | 2 | Details |
| US4901729A | Ultrasonic probe having ultrasonic propagation medium | Expired / Lapsed | 1988-03-10 | 1990-02-20 | 6 | Details |
| US4900981A | Flat-shaped display apparatus | Expired / Lapsed | 1986-12-19 | 1990-02-13 | 20 | Details |
| US4881258A | Portable type mobile radio telephone | Expired / Lapsed | 1987-08-19 | 1989-11-14 | 13 | Details |
| US4877677A | Wear-protected device | Expired / Lapsed | 1986-02-18 | 1989-10-31 | 25 | Details |
| US4853579A | Drive method for ultrasonic motor providing enhanced stabil… | Expired / Lapsed | 1987-08-25 | 1989-08-01 | 12 | Details |
| US4845021A | Method for recording optical information in optical high de… | Expired / Lapsed | 1988-01-14 | 1989-07-04 | 7 | Details |
| US4839883A | Optical information recording medium | Expired / Lapsed | 1987-06-25 | 1989-06-13 | 17 | Details |
| US4824766A | Pattern forming method | Expired / Lapsed | 1987-03-27 | 1989-04-25 | 13 | Details |
| US4805155A | Speed control circuit for mechanical scan ultrasonic imagin… | Expired / Lapsed | 1986-12-15 | 1989-02-14 | 10 | Details |
| US4791677A | Image signal processor | Expired / Lapsed | 1986-12-11 | 1988-12-13 | 10 | Details |
| US4734904A | Reproducing-only and recordable-reproduceable optical discs… | Expired / Lapsed | 1987-03-18 | 1988-03-29 | 3 | Details |
| US4724533A | Optical head | Expired / Lapsed | 1985-06-13 | 1988-02-09 | 22 | Details |
| US4712194A | Static random access memory | Expired / Lapsed | 1985-05-31 | 1987-12-08 | 15 | Details |
| US4699150A | Ultrasonic transducer assembly for medical diagnostic exami… | Expired / Lapsed | 1986-05-16 | 1987-10-13 | 2 | Details |
| US4688203A | Optical recording and reproducing apparatus | Expired / Lapsed | 1984-04-23 | 1987-08-18 | 6 | Details |
| US4651850A | Acoustic lens | Expired / Lapsed | 1986-02-24 | 1987-03-24 | 4 | Details |
| US4637256A | Ultrasonic probe having dual-motion transducer | Expired / Lapsed | 1984-06-22 | 1987-01-20 | 14 | Details |
| US4636696A | Servo system | Expired / Lapsed | 1985-10-09 | 1987-01-13 | 11 | Details |
| US4608994A | Physiological monitoring system | Expired / Lapsed | 1984-12-20 | 1986-09-02 | 2 | Details |
| US4603419A | Semiconductor laser structure including dual mounts having … | Expired / Lapsed | 1985-08-22 | 1986-07-29 | 2 | Details |
| US4569038A | Optical disk, high density optical disk system, and high de… | Expired / Lapsed | 1981-12-17 | 1986-02-04 | 31 | Details |
| US4551768A | Method and apparatus for processing image signal | Expired / Lapsed | 1983-10-27 | 1985-11-05 | 19 | Details |
| US4540618A | Magnetic recording medium | Expired / Lapsed | 1983-08-08 | 1985-09-10 | 18 | Details |
| US4525657A | Torque ripple compensation circuit for a brushless D.C. mot… | Expired / Lapsed | 1984-03-07 | 1985-06-25 | 5 | Details |
| US4523122A | Piezoelectric ultrasonic transducers having acoustic impeda… | Expired / Lapsed | 1984-03-16 | 1985-06-11 | 30 | Details |
| US4504750A | Linear motor | Expired / Lapsed | 1983-04-20 | 1985-03-12 | 12 | Details |
| US4501944A | Turntable type high-frequency heating apparatus | Expired / Lapsed | 1982-12-21 | 1985-02-26 | 4 | Details |
| US4500830A | Current control circuit for a plurality of loads | Expired / Lapsed | 1982-08-17 | 1985-02-19 | 6 | Details |
| US4499356A | Microwave heater having a device for thawing frozen cakes | Expired / Lapsed | 1983-04-04 | 1985-02-12 | 3 | Details |
| US4476620A | Method of making a gallium nitride light-emitting diode | Expired / Lapsed | 1983-03-31 | 1984-10-16 | 17 | Details |
| US4470308A | Arc scan ultrasonic imaging system having diverging lens an… | Expired / Lapsed | 1982-08-03 | 1984-09-11 | 9 | Details |
| US4462092A | Arc scan ultrasonic transducer array | Expired / Lapsed | 1981-05-14 | 1984-07-24 | 11 | Details |
| US4450442A | Display processor for superimposed-picture display system | Expired / Lapsed | 1981-12-11 | 1984-05-22 | 4 | Details |
| US4440025A | Arc scan transducer array having a diverging lens | Expired / Lapsed | 1981-06-26 | 1984-04-03 | 16 | Details |
| US4423517A | Code sequence synchronization system for spread spectrum co… | Expired / Lapsed | 1981-01-19 | 1983-12-27 | 3 | Details |
| US4419663A | Display device | Expired / Lapsed | 1980-03-07 | 1983-12-06 | 127 | Details |
| US4412823A | Oral cavity cleaner | Expired / Lapsed | 1981-07-10 | 1983-11-01 | 12 | Details |
| US4408966A | Pump for supplying liquid fuel | Expired / Lapsed | 1980-12-19 | 1983-10-11 | 11 | Details |
| US4385098A | Magnetic recording media | Expired / Lapsed | 1981-11-30 | 1983-05-24 | 8 | Details |
| US4370577A | Linear motor | Expired / Lapsed | 1981-07-17 | 1983-01-25 | 2 | Details |
| US4368643A | Ultrasonic imaging by radial scan beams emanating from a hy… | Expired / Lapsed | 1980-11-14 | 1983-01-18 | 9 | Details |
| US4366503A | Solid state image pick-up device and its charge transfer me… | Expired / Lapsed | 1980-10-15 | 1982-12-28 | 12 | Details |
| US4359674A | Control system for a DC motor | Expired / Lapsed | 1980-02-21 | 1982-11-16 | 5 | Details |
| US4354505A | Method of and apparatus for testing and indicating relaxati… | Expired / Lapsed | 1980-09-03 | 1982-10-19 | 24 | Details |
| US4354092A | Electric hair curling iron with rechargeable battery power … | Expired / Lapsed | 1979-09-28 | 1982-10-12 | 18 | Details |
| US4348902A | Ultrasonic imaging system using plural square wave pulse tr… | Expired / Lapsed | 1980-11-14 | 1982-09-14 | 5 | Details |
| US4340909A | Solid state area imaging apparatus | Expired / Lapsed | 1980-07-07 | 1982-07-20 | 19 | Details |
| US4332428A | Rotary mechanism with axial bearings | Expired / Lapsed | 1980-01-04 | 1982-06-01 | 9 | Details |
| US4323629A | Metallic thin film magnetic recording medium | Expired / Lapsed | 1980-07-11 | 1982-04-06 | 4 | Details |
| US4310907A | Scan converter for a sector scan type ultrasound imaging sy… | Expired / Lapsed | 1979-12-04 | 1982-01-12 | 14 | Details |
| US4309082A | Electrochromic display apparatus | Expired / Lapsed | 1979-11-05 | 1982-01-05 | 13 | Details |
| US4304460A | Optical switching device | Expired / Lapsed | 1979-03-07 | 1981-12-08 | 34 | Details |
| US4298891A | Television receiver | Expired / Lapsed | 1979-06-18 | 1981-11-03 | 4 | Details |
| US4256513A | Photoelectric conversion device | Expired / Lapsed | 1979-10-16 | 1981-03-17 | 6 | Details |
| US4246578A | Pattern generation display system | Expired / Lapsed | 1979-02-08 | 1981-01-20 | 7 | Details |
| US4242618A | Speed controller for rotary machine | Expired / Lapsed | 1978-01-20 | 1980-12-30 | 9 | Details |
| US4231016A | Input signal recognition circuit | Expired / Lapsed | 1978-11-27 | 1980-10-28 | 4 | Details |
| US4224829A | Two-dimensional linear B-scan ultrasound diagnostic apparat… | Expired / Lapsed | 1978-11-21 | 1980-09-30 | 10 | Details |
| US4224125A | Enzyme electrode | Expired / Lapsed | 1978-09-26 | 1980-09-23 | 11 | Details |
| US4211967A | Motor speed adjusting apparatus | Expired / Lapsed | 1978-04-21 | 1980-07-08 | 10 | Details |
| US4177488A | Magnetic recording and playback means with indication of ta… | Expired / Lapsed | 1978-01-17 | 1979-12-04 | 8 | Details |
| US4143388A | Mos type semiconductor device | Expired / Lapsed | 1977-05-17 | 1979-03-06 | 24 | Details |
| US4120452A | Automatic vending system | Expired / Lapsed | 1976-08-12 | 1978-10-17 | 10 | Details |
| US4121078A | Microwave heating apparatus | Expired / Lapsed | 1976-04-27 | 1978-10-17 | 23 | Details |
| US4117514A | Solid state imaging device | Expired / Lapsed | 1977-02-14 | 1978-09-26 | 12 | Details |
| US4105020A | Blood pressure and pulse rate measuring apparatus | Expired / Lapsed | 1976-05-14 | 1978-08-08 | 4 | Details |
| US4104584A | Moisture content meter | Expired / Lapsed | 1977-02-02 | 1978-08-01 | 5 | Details |
| US4101795A | Ultrasonic probe | Expired / Lapsed | 1977-06-17 | 1978-07-18 | 14 | Details |
| US4096510A | Thermal printing head | Expired / Lapsed | 1977-08-03 | 1978-06-20 | 3 | Details |
| US4094007A | Temperature-compensated analog voltage memory device | Expired / Lapsed | 1976-11-26 | 1978-06-06 | 9 | Details |
| US4091284A | Thermoluminescent dosimeter readout instrument | Expired / Lapsed | 1976-09-23 | 1978-05-23 | 11 | Details |
| US4091266A | Electrical circuit for controlling a temperature of a heati… | Expired / Lapsed | 1976-04-07 | 1978-05-23 | 14 | Details |
| US4087629A | Binaural sound reproducing system with acoustic reverberati… | Expired / Lapsed | 1977-01-10 | 1978-05-02 | 17 | Details |
| US4072958A | Ink injection type writing system using amplitude-modulated… | Expired / Lapsed | 1976-04-02 | 1978-02-07 | 8 | Details |
| US4067046A | Solid state imaging device | Expired / Lapsed | 1976-03-01 | 1978-01-03 | 7 | Details |
| US4064224A | Method of making fibrous alkali titanates | Expired / Lapsed | 1976-01-28 | 1977-12-20 | 15 | Details |
| US4063280A | Chroma-signal processing system | Expired / Lapsed | 1976-09-27 | 1977-12-13 | 8 | Details |
| US4052749A | Thin film magnetic head | Expired / Lapsed | 1976-05-19 | 1977-10-04 | 13 | Details |
| US4052738A | Stylus for capacitive videodisc | Expired / Lapsed | 1975-04-04 | 1977-10-04 | 4 | Details |
| US4051325A | Speech intercommunication system | Expired / Lapsed | 1976-01-27 | 1977-09-27 | 5 | Details |
| US4049938A | Microwave oven | Expired / Lapsed | 1976-05-11 | 1977-09-20 | 13 | Details |
| US4044545A | World clock | Expired / Lapsed | 1975-12-01 | 1977-08-30 | 10 | Details |
| US4041437A | Humidity sensor | Expired / Lapsed | 1975-12-24 | 1977-08-09 | 12 | Details |
| US4041481A | Scanning apparatus for an electrophoretic matrix display pa… | Expired / Lapsed | 1975-10-01 | 1977-08-09 | 4 | Details |
| US4037918A | Fourier-transform holography by pseudo-random phase shifting | Expired / Lapsed | 1975-07-31 | 1977-07-26 | 35 | Details |
| US4034406A | Facsimile signal transmission system | Expired / Lapsed | 1974-11-20 | 1977-07-05 | 16 | Details |
| US4029392A | Liquid crystal display | Expired / Lapsed | 1974-07-11 | 1977-06-14 | 6 | Details |
| US4026014A | Method of making connector assembly for printed wiring board | Expired / Lapsed | 1975-06-26 | 1977-05-31 | 9 | Details |
| US4026703A | Dual-layered photoreceptor use in electrophotography | Expired / Lapsed | 1975-03-26 | 1977-05-31 | 9 | Details |
| US4019009A | Microwave heating apparatus | Expired / Lapsed | 1975-02-06 | 1977-04-19 | 14 | Details |
| US4014043A | Cassette type magnetic recording and reproducing apparatus | Expired / Lapsed | 1974-05-15 | 1977-03-22 | 2 | Details |
| US3987488A | Multi-tracks magnetic head with single turn winding structu… | Expired / Lapsed | 1975-06-02 | 1976-10-19 | 9 | Details |
| US3981004A | Device for applying an A.C. voltage without D.C. component … | Expired / Lapsed | 1974-11-15 | 1976-09-14 | 5 | Details |
| US3975637A | Device for storage and display of a radiation image | Expired / Lapsed | 1974-10-23 | 1976-08-17 | 5 | Details |
| US3974337A | FM television telephone system | Expired / Lapsed | 1974-05-23 | 1976-08-10 | 10 | Details |
| US3971874A | Optical information storage material and method of making it | Expired / Lapsed | 1974-08-26 | 1976-07-27 | 15 | Details |
| US3961207A | Output retaining electronic circuit | Expired / Lapsed | 1974-09-20 | 1976-06-01 | 5 | Details |
| US3952090A | Method of making fibrous alkali titanates | Expired / Lapsed | 1974-10-23 | 1976-04-20 | 11 | Details |
| US3944334A | Acousto-optic filter | Expired / Lapsed | 1974-08-27 | 1976-03-16 | 7 | Details |
| US3944335A | Acousto-optic filter | Expired / Lapsed | 1974-08-27 | 1976-03-16 | 6 | Details |
| US3943461A | High power multibeam laser | Expired / Lapsed | 1974-09-13 | 1976-03-09 | 6 | Details |
| US3942148A | Device for simultaneously controlling a plurality of variab… | Expired / Lapsed | 1974-05-29 | 1976-03-02 | 4 | Details |
| US3940773A | Liquid droplet writing mechanism | Expired / Lapsed | 1974-08-14 | 1976-02-24 | 13 | Details |
| US3936768A | Molecular gas laser device with an improved output mirror m… | Expired / Lapsed | 1973-07-05 | 1976-02-03 | 5 | Details |
| US3936752A | Device for presetting a television program and the like | Expired / Lapsed | 1973-06-25 | 1976-02-03 | 14 | Details |
| US3928760A | Remote control system | Expired / Lapsed | 1974-05-07 | 1975-12-23 | 10 | Details |
| US3921215A | Magnetic recording and reproducing system with tape counter | Expired / Lapsed | 1974-06-24 | 1975-11-18 | 8 | Details |
| US3917380A | Method of hologram recording with reduced speckle noise | Expired / Lapsed | 1973-12-26 | 1975-11-04 | 13 | Details |
| US3912860A | Image display system | Expired / Lapsed | 1974-06-10 | 1975-10-14 | 9 | Details |
| US3898421A | Push button switch with elastic conductive sheet | Expired / Lapsed | 1973-08-16 | 1975-08-05 | 7 | Details |
| US3892568A | Electrophoretic image reproduction process | Expired / Lapsed | 1970-04-17 | 1975-07-01 | 18 | Details |
| US3890592A | Contactless control system for volume control and power on-… | Expired / Lapsed | 1972-07-31 | 1975-06-17 | 6 | Details |
| US3877776A | Speckle reduction in holography | Expired / Lapsed | 1974-04-25 | 1975-04-15 | 14 | Details |
| US3872509A | Cassette type magnetic recording and reproducing apparatus | Expired / Lapsed | 1970-09-11 | 1975-03-18 | 2 | Details |
| US3864022A | Color switching liquid crystal display | Expired / Lapsed | 1973-12-18 | 1975-02-04 | 11 | Details |
| US3849773A | Apparatus for displaying characters and/or limited graphs | Expired / Lapsed | 1973-03-12 | 1974-11-19 | 2 | Details |
| US3849765A | Programmable logic controller | Expired / Lapsed | 1972-11-20 | 1974-11-19 | 16 | Details |
| US3842702A | Electronic musical instrument with variable frequency divis… | Expired / Lapsed | 1973-06-01 | 1974-10-22 | 8 | Details |
| US3814897A | Thermal printing head | Expired / Lapsed | 1972-02-29 | 1974-06-04 | 6 | Details |
| US3813484A | Magnetic tape reproducing system for stop motion video with… | Expired / Lapsed | 1973-03-22 | 1974-05-28 | 8 | Details |
| US3812488A | Television receiver for displaying a computing process | Expired / Lapsed | 1972-07-28 | 1974-05-21 | 8 | Details |
| US3811113A | Keyboard operated pattern generating device | Expired / Lapsed | 1972-12-19 | 1974-05-14 | 11 | Details |
| US3796853A | Connection type carbon electrode | Expired / Lapsed | 1972-12-18 | 1974-03-12 | 4 | Details |
| US3776615A | Liquid crystal display device | Expired / Lapsed | 1972-06-02 | 1973-12-04 | 6 | Details |
| US3766528A | Pattern generating device | Expired / Lapsed | 1972-02-28 | 1973-10-16 | 8 | Details |
| US3766041A | Method of producing piezoelectric thin films by cathodic sp… | Expired / Lapsed | 1971-09-17 | 1973-10-16 | 3 | Details |
| US3756693A | Electrophoretic display device | Expired / Lapsed | 1971-12-20 | 1973-09-04 | 16 | Details |
| US3749835A | Continuous signal producing system | Expired / Lapsed | 1971-05-11 | 1973-07-31 | 10 | Details |
| US3745241A | Television receiver for separating and reproducing multiple… | Expired / Lapsed | 1971-03-30 | 1973-07-10 | 8 | Details |
| US3742315A | Schottky barrier type semiconductor device with improved ba… | Expired / Lapsed | 1971-10-18 | 1973-06-26 | 3 | Details |
| US3730800A | Method of making germanium semiconductor device | Expired / Lapsed | 1969-12-24 | 1973-05-01 | 0 | Details |
| US3729630A | Thermoluminescence readout instrument | Expired / Lapsed | 1971-01-26 | 1973-04-24 | 5 | Details |
| US3717778A | Piezoelectric ceramic resonator with asymmetrically rough e… | Expired / Lapsed | 1971-06-03 | 1973-02-20 | 0 | Details |
| US3692973A | Arc welding | Expired / Lapsed | 1970-09-01 | 1972-09-19 | 16 | Details |
| US3683248A | Directly driven turntable apparatus for phonograph records | Expired / Lapsed | 1971-03-24 | 1972-08-08 | 9 | Details |
| US3682160A | Physiological signal transmitter for use inside the body | Expired / Lapsed | 1969-10-16 | 1972-08-08 | 18 | Details |
| US3677816A | Method for making electrically conductive layer of copper i… | Expired / Lapsed | 1968-10-22 | 1972-07-18 | 0 | Details |
| US3654557A | System for selecting channel | Expired / Lapsed | 1970-04-06 | 1972-04-04 | 11 | Details |
| FR2099961A5 | FR2099961A5 - - Google Patents | Expired / Lapsed | 1971-06-25 | 1972-03-17 | 0 | Details |
| US3641316A | Identification system | Expired / Lapsed | 1970-08-17 | 1972-02-08 | 36 | Details |
| US3636253A | Magnetic recording and reproducing apparatus | Expired / Lapsed | 1969-10-23 | 1972-01-18 | 10 | Details |
| US3636417A | Schottky barrier semiconductor device | Expired / Lapsed | 1969-04-02 | 1972-01-18 | 7 | Details |
| US3633146A | Variable resistor of sliding type | Expired / Lapsed | 1970-06-22 | 1972-01-04 | 7 | Details |
| US3611068A | Contactless pressure sensitive semiconductor switch | Expired / Lapsed | 1970-05-20 | 1971-10-05 | 1 | Details |
| US3603766A | Arc-image zone-refining furnace | Expired / Lapsed | 1969-09-15 | 1971-09-07 | 2 | Details |
| US3603727A | Variable scale scanning system for image reproduction | Expired / Lapsed | 1969-03-24 | 1971-09-07 | 4 | Details |
| US3601558A | Cartridge-type magnetic tape recording and reproducing appa… | Expired / Lapsed | 1968-11-13 | 1971-08-24 | 7 | Details |
| US3599764A | Shaft speed control system comprising clutch and brake | Expired / Lapsed | 1969-07-18 | 1971-08-17 | 21 | Details |
| US3589267A | Shutter means operated by fan motor | Expired / Lapsed | 1969-08-14 | 1971-06-29 | 4 | Details |
| US3590353A | Electronically commutated motor having an outside rotor and… | Expired / Lapsed | 1969-07-09 | 1971-06-29 | 6 | Details |
| US3585474A | Electronic commutating system and electronically commutated… | Expired / Lapsed | 1969-02-28 | 1971-06-15 | 6 | Details |
| US3580355A | Automatic speed control apparatus for automotive vehicles | Expired / Lapsed | 1968-01-03 | 1971-05-25 | 11 | Details |
| US3575632A | Cooling arrangement for magnetron | Expired / Lapsed | 1968-09-06 | 1971-04-20 | 6 | Details |
| US3560858A | Automatic tuning type receiver with frequency holding circu… | Expired / Lapsed | 1968-07-05 | 1971-02-02 | 0 | Details |
| US3560828A | D.c. motor control system | Expired / Lapsed | 1967-07-03 | 1971-02-02 | 0 | Details |
| US3547794A | Ph-sensor | Expired / Lapsed | 1968-10-01 | 1970-12-15 | 0 | Details |
| US3535635A | Method and apparatus for measuring noise in an active eleme… | Expired / Lapsed | 1967-05-17 | 1970-10-20 | 0 | Details |
| US3518508A | Transducer | Expired / Lapsed | 1966-12-01 | 1970-06-30 | 0 | Details |
| US3485499A | Automatic speed change device for record players | Expired / Lapsed | 1966-12-09 | 1969-12-23 | 0 | Details |
| US3472950A | Method for improving sharpness of television images | Expired / Lapsed | 1966-08-05 | 1969-10-14 | 0 | Details |
| US3467876A | Pulse modulation system | Expired / Lapsed | 1967-12-06 | 1969-09-16 | 0 | Details |
| US3447087A | Autotuning radio receiver with frequency holding circuit | Expired / Lapsed | 1966-06-02 | 1969-05-27 | 0 | Details |
| US3400252A | Electrical heating device | Expired / Lapsed | 1965-10-20 | 1968-09-03 | 0 | Details |
| US3375774A | Fully automatic electric coffee pot | Expired / Lapsed | 1967-01-05 | 1968-04-02 | 0 | Details |
| US3372317A | Photoelectric device | Expired / Lapsed | 1966-05-11 | 1968-03-05 | 0 | Details |
| US3372245A | Electrostatic electro-acoustic transducer | Expired / Lapsed | 1964-01-20 | 1968-03-05 | 0 | Details |
| US3371164A | Combined magnetic transducing and erase head | Expired / Lapsed | 1963-11-05 | 1968-02-27 | 0 | Details |
| FR1509958A | Electric stapler | Expired / Lapsed | 1966-09-22 | 1968-01-19 | 0 | Details |
| US3363909A | Phonograph pickup apparatus | Expired / Lapsed | 1965-05-19 | 1968-01-16 | 0 | Details |
| US3333128A | Miniature synchronous motor | Expired / Lapsed | 1965-06-25 | 1967-07-25 | 2 | Details |
| US3330907A | Modulation indicating devices | Expired / Lapsed | 1963-10-07 | 1967-07-11 | 2 | Details |
| US3327053A | Recorder motor synchronization using gated sync signals | Expired / Lapsed | 1963-12-26 | 1967-06-20 | 2 | Details |
| US3315658A | Body warmers | Expired / Lapsed | 1965-12-27 | 1967-04-25 | 2 | Details |
| US3259558A | Method of producing a metal oxide coating | Expired / Lapsed | 1962-02-12 | 1966-07-05 | 2 | Details |
| US3173128A | Selective calling system of receivers devoid of wrong calli… | Expired / Lapsed | 1962-08-29 | 1965-03-09 | 0 | Details |