US Philips Corp
US PhilipsActive Patents
0
Total Holdings
650
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| DE2410418A1 | ARTIFICIAL HEART PUMP | Expired / Lapsed | 1974-03-05 | — | 0 | Details |
| US6418477B1 | Communication network | Expired / Lapsed | 1996-11-15 | 2002-07-09 | 28 | Details |
| US6389072B1 | Motion analysis based buffer regulation scheme | Expired / Lapsed | 1998-12-23 | 2002-05-14 | 21 | Details |
| US6374210B1 | Automatic segmentation of a text | Expired / Lapsed | 1999-11-24 | 2002-04-16 | 14 | Details |
| US6370388B1 | Telephony device transmitting divided messages | Expired / Lapsed | 1998-07-20 | 2002-04-09 | 8 | Details |
| US6349307B1 | Cooperative topical servers with automatic prefiltering and… | Expired / Lapsed | 1998-12-28 | 2002-02-19 | 19 | Details |
| US6347114B1 | Video signal analysis and storage | Expired / Lapsed | 1998-03-16 | 2002-02-12 | 11 | Details |
| US6340971B1 | Method and device for keyframe-based video displaying using… | Expired / Lapsed | 1998-01-29 | 2002-01-22 | 20 | Details |
| US6332034B1 | Image processing method including steps for the segmentatio… | Expired / Lapsed | 1999-03-19 | 2001-12-18 | 16 | Details |
| US6329986B1 | Priority-based virtual environment | Expired / Lapsed | 1998-02-21 | 2001-12-11 | 18 | Details |
| US6320869B1 | Telecommunication network with improved access protocol | Expired / Lapsed | 1996-04-24 | 2001-11-20 | 23 | Details |
| US6313697B1 | Device for amplifying signals | Expired / Lapsed | 1999-12-07 | 2001-11-06 | 18 | Details |
| US5161886C1 | Method for the perspective display of a part of a topograph… | Expired / Lapsed | 1991-11-18 | 2001-10-30 | 0 | Details |
| US6298480B1 | System for distributing computer programs | Expired / Lapsed | 1996-11-19 | 2001-10-02 | 30 | Details |
| US6285995B1 | Image retrieval system using a query image | Expired / Lapsed | 1998-06-22 | 2001-09-04 | 15 | Details |
| US6278690B1 | Local area network for reconfiguration in the event of line… | Expired / Lapsed | 1998-04-09 | 2001-08-21 | 14 | Details |
| US6260194B1 | Information handling for interactive apparatus | Expired / Lapsed | 1998-01-07 | 2001-07-10 | 11 | Details |
| US6256633B1 | Context-based and user-profile driven information retrieval | Expired / Lapsed | 1998-06-25 | 2001-07-03 | 6 | Details |
| US6243488B1 | Method and apparatus for rendering a two dimensional image … | Expired / Lapsed | 1996-12-03 | 2001-06-05 | 28 | Details |
| US6211856B1 | Graphical user interface touch screen with an auto zoom fea… | Expired / Lapsed | 1998-04-17 | 2001-04-03 | 17 | Details |
| US6208967B1 | Method and apparatus for automatic speech segmentation into… | Expired / Lapsed | 1997-02-25 | 2001-03-27 | 8 | Details |
| US6201790B1 | Network access control method, and device and system for im… | Expired / Lapsed | 1997-06-23 | 2001-03-13 | 8 | Details |
| US6185538B1 | System for editing digital video and audio information | Expired / Lapsed | 1998-07-29 | 2001-02-06 | 11 | Details |
| US6181743B1 | Method and device for modifying data in an encoded data str… | Expired / Lapsed | 1999-03-24 | 2001-01-30 | 5 | Details |
| US6169545B1 | Data management within a virtual environment browser | Expired / Lapsed | 1998-10-13 | 2001-01-02 | 11 | Details |
| US5959536A | Task-driven distributed multimedia consumer system | Expired / Lapsed | 1996-10-15 | 1999-09-28 | 22 | Details |
| US5902239A | Image guided surgery system including a unit for transformi… | Expired / Lapsed | 1996-10-30 | 1999-05-11 | 13 | Details |
| US5872861A | Digital image processing method for automatic detection of … | Expired / Lapsed | 1996-12-23 | 1999-02-16 | 9 | Details |
| US5825125A | Neon discharge lamp | Expired / Lapsed | 1996-01-26 | 1998-10-20 | 20 | Details |
| US5784357A | Packet switching system | Expired / Lapsed | 1995-09-08 | 1998-07-21 | 10 | Details |
| US5579496A | Method and apparatus for processing control instructions re… | Expired / Lapsed | 1995-06-07 | 1996-11-26 | 10 | Details |
| US5559901A | Method and device for determining a contour in a space of i… | Expired / Lapsed | 1994-06-28 | 1996-09-24 | 22 | Details |
| USD369190S | Electronic game | Expired / Lapsed | 1995-02-17 | 1996-04-23 | 1 | Details |
| USD363720S | Remote control unit | Expired / Lapsed | 1994-03-07 | 1995-10-31 | 1 | Details |
| US5453929A | Control system with driver monitor | Expired / Lapsed | 1992-12-04 | 1995-09-26 | 18 | Details |
| US5402117A | Method of collecting traffic information, and system for pe… | Expired / Lapsed | 1993-11-29 | 1995-03-28 | 10 | Details |
| US5353468A | Vacuum cleaner comprising a suction tube and suction tube p… | Expired / Lapsed | 1992-10-13 | 1994-10-11 | 16 | Details |
| US5347570A | Method for peripheral angiography and arrangement for carry… | Expired / Lapsed | 1993-06-21 | 1994-09-13 | 7 | Details |
| US5331963A | Apparatus for examining objects by ultrasonic echography | Expired / Lapsed | 1992-06-29 | 1994-07-26 | 6 | Details |
| US5315207A | Device for generating electrons, and display device | Expired / Lapsed | 1990-04-04 | 1994-05-24 | 15 | Details |
| US5313524A | Self-contained active sound reproducer with switchable cont… | Expired / Lapsed | 1992-10-21 | 1994-05-17 | 15 | Details |
| US5302901A | Magnetic resonance apparatus comprising decoupled receiver … | Expired / Lapsed | 1992-08-20 | 1994-04-12 | 14 | Details |
| US5285160A | Magnetic resonance apparatus comprising adjacently arranged… | Expired / Lapsed | 1992-08-06 | 1994-02-08 | 21 | Details |
| USD340717S | Radio receiver | Expired / Lapsed | 1991-03-20 | 1993-10-26 | 1 | Details |
| US5208671A | Teletext decoder arrangement | Expired / Lapsed | 1991-11-19 | 1993-05-04 | 20 | Details |
| US5179544A | Control system for the magnetic head of a magneto-optical d… | Expired / Lapsed | 1991-11-26 | 1993-01-12 | 13 | Details |
| US5161886A | Method for the perspective display of a part of a topograph… | Expired / Lapsed | 1991-11-18 | 1992-11-10 | 22 | Details |
| USD328896S | Clock radio receiver | Expired / Lapsed | 1990-09-06 | 1992-08-25 | 1 | Details |
| USD328902S | Remote control for a television receiver | Expired / Lapsed | 1990-02-02 | 1992-08-25 | 1 | Details |
| US5113566A | Method of producing a multilayer piezoelectric element | Expired / Lapsed | 1991-02-06 | 1992-05-19 | 6 | Details |
| US5090401A | Method of positioning a patient arranged on a table top of … | Expired / Lapsed | 1991-01-11 | 1992-02-25 | 10 | Details |
| US5068846A | Reflective optical record carrier | Expired / Lapsed | 1988-04-23 | 1991-11-26 | 10 | Details |
| US5000183A | Device for processing an echographic signal | Expired / Lapsed | 1989-09-15 | 1991-03-19 | 2 | Details |
| US4971925A | Improved method of manufacturing a semiconductor device of … | Expired / Lapsed | 1988-01-11 | 1990-11-20 | 12 | Details |
| US4970175A | Method of manufacturing a semiconductor device using SEG an… | Expired / Lapsed | 1989-08-04 | 1990-11-13 | 5 | Details |
| US4948029A | Method of bonding two bodies | Expired / Lapsed | 1989-06-19 | 1990-08-14 | 6 | Details |
| US4940636A | Optical interference filter | Expired / Lapsed | 1988-07-21 | 1990-07-10 | 9 | Details |
| US4928698A | Device for measuring the speed of moving organs and blood f… | Expired / Lapsed | 1989-04-12 | 1990-05-29 | 3 | Details |
| US4929999A | Combination of a support and a semiconductor body and metho… | Expired / Lapsed | 1989-04-04 | 1990-05-29 | 5 | Details |
| US4923290A | Polarization scrambler | Expired / Lapsed | 1988-08-16 | 1990-05-08 | 21 | Details |
| US4893283A | Echo ultrasound system with an improved image sequence rate | Expired / Lapsed | 1988-12-05 | 1990-01-09 | 3 | Details |
| US4893298A | Record-carrier body provided with a relief structure of opt… | Expired / Lapsed | 1985-05-17 | 1990-01-09 | 10 | Details |
| US4859930A | Current source arrangement | Expired / Lapsed | 1988-05-12 | 1989-08-22 | 5 | Details |
| US4853585A | Display device with multiplicity of closely spaced electron… | Expired / Lapsed | 1988-02-16 | 1989-08-01 | 13 | Details |
| US4847834A | Local area network | Expired / Lapsed | 1988-01-07 | 1989-07-11 | 10 | Details |
| US4847524A | Gamma correction circuit | Expired / Lapsed | 1987-03-04 | 1989-07-11 | 6 | Details |
| USD301715S | Radio receiver | Expired / Lapsed | 1986-10-09 | 1989-06-20 | 1 | Details |
| US4816385A | Method of optically recording and erasing information | Expired / Lapsed | 1987-05-04 | 1989-03-28 | 10 | Details |
| US4807053A | Method and apparatus for recording and/or reproducing video… | Expired / Lapsed | 1986-10-29 | 1989-02-21 | 17 | Details |
| US4807214A | Apparatus for recording and/or reading information on an op… | Expired / Lapsed | 1981-10-23 | 1989-02-21 | 6 | Details |
| US4785348A | System for the transmission and reception of high-definitio… | Expired / Lapsed | 1987-11-03 | 1988-11-15 | 11 | Details |
| US4779080A | Electronic information display systems | Expired / Lapsed | 1986-03-06 | 1988-10-18 | 11 | Details |
| US4765753A | Method and apparatus for handing-over a radio connection fr… | Expired / Lapsed | 1987-03-03 | 1988-08-23 | 18 | Details |
| US4758959A | Vehicle navigation system provided with an adaptive inertia… | Expired / Lapsed | 1985-09-03 | 1988-07-19 | 19 | Details |
| US4748385A | Brushless d.c. motor and switching device for use in such a… | Expired / Lapsed | 1987-04-03 | 1988-05-31 | 11 | Details |
| USD295742S | Modular telephone answering set | Expired / Lapsed | 1986-08-18 | 1988-05-17 | 1 | Details |
| US4723111A | Amplifier arrangement | Expired / Lapsed | 1986-07-14 | 1988-02-02 | 7 | Details |
| US4721358A | Optical and electrical connector device | Expired / Lapsed | 1985-11-14 | 1988-01-26 | 8 | Details |
| US4717855A | Dual-cathode electron emission device | Expired / Lapsed | 1986-02-26 | 1988-01-05 | 21 | Details |
| USD293467S | Physiological unit for monitoring body functions | Expired / Lapsed | 1985-04-19 | 1987-12-29 | 1 | Details |
| US4714846A | Apparatus for the examination of objects with ultra-sound, … | Expired / Lapsed | 1986-10-22 | 1987-12-22 | 4 | Details |
| US4696584A | Self-cleaning air bearing comprising a flow equalizing groo… | Expired / Lapsed | 1985-12-11 | 1987-09-29 | 4 | Details |
| US4696568A | Method of and apparatus for measuring the velocity and/or t… | Expired / Lapsed | 1984-05-11 | 1987-09-29 | 22 | Details |
| US4682033A | Camera for detecting X and γ rays, whose scintillation bloc… | Expired / Lapsed | 1985-07-01 | 1987-07-21 | 12 | Details |
| US4680966A | Apparatus for examining an object by ultrasonic echography | Expired / Lapsed | 1985-06-10 | 1987-07-21 | 11 | Details |
| US4677981A | Device for the examination of objects by ultrasonic echogra… | Expired / Lapsed | 1985-09-20 | 1987-07-07 | 2 | Details |
| USD290608S | Digital pager | Expired / Lapsed | 1984-12-20 | 1987-06-30 | 1 | Details |
| USD290356S | Digital pager | Expired / Lapsed | 1984-11-07 | 1987-06-16 | 1 | Details |
| US4668334A | Method and apparatus for applying a layer of photosensitive… | Expired / Lapsed | 1985-11-06 | 1987-05-26 | 5 | Details |
| US4661944A | Optical recording/playback apparatus having a focusing cont… | Expired / Lapsed | 1984-06-11 | 1987-04-28 | 9 | Details |
| US4649418A | Data card and method of manufacturing same | Expired / Lapsed | 1983-09-22 | 1987-03-10 | 12 | Details |
| US4645343A | Atomic resonance line source lamps and spectrophotometers f… | Expired / Lapsed | 1984-06-04 | 1987-02-24 | 42 | Details |
| US4644277A | NMR tomography apparatus | Expired / Lapsed | 1985-01-07 | 1987-02-17 | 8 | Details |
| US4639672A | Nuclear magnetic resonance apparatus | Expired / Lapsed | 1984-10-10 | 1987-01-27 | 10 | Details |
| US4635121A | Arrangement for the programmable control of a radio and/or … | Expired / Lapsed | 1983-11-21 | 1987-01-06 | 6 | Details |
| US4632327A | Apparatus for filling a cassette with a length of magnetic … | Expired / Lapsed | 1983-12-19 | 1986-12-30 | 16 | Details |
| US4633509A | Process for selecting a control channel in a mobile radio s… | Expired / Lapsed | 1983-12-16 | 1986-12-30 | 18 | Details |
| US4626680A | Pressure sensor whose optical system moves in response to m… | Expired / Lapsed | 1984-03-07 | 1986-12-02 | 11 | Details |
| US4622492A | Picture display panel | Expired / Lapsed | 1984-08-27 | 1986-11-11 | 4 | Details |
| US4617484A | Electric motor with a torsionally flexible rotor mount | Expired / Lapsed | 1985-01-25 | 1986-10-14 | 13 | Details |
| US4612637A | Multiple-access communications system | Expired / Lapsed | 1984-07-23 | 1986-09-16 | 6 | Details |
| US4612505A | Nuclear magnetic resonance apparatus | Expired / Lapsed | 1984-06-08 | 1986-09-16 | 10 | Details |
| US4604550A | Display tube with terbium-activated blue-luminescing phosph… | Expired / Lapsed | 1984-11-01 | 1986-08-05 | 9 | Details |
| US4602157A | X-ray image recording device | Expired / Lapsed | 1984-02-02 | 1986-07-22 | 6 | Details |
| US4600686A | Method of forming a resist mask resistant to plasma etching | Expired / Lapsed | 1983-05-20 | 1986-07-15 | 10 | Details |
| US4599628A | Microplanar ink-jet printing head | Expired / Lapsed | 1984-11-19 | 1986-07-08 | 15 | Details |
| US4573206A | Method and means for allocating the volume of traffic over … | Expired / Lapsed | 1983-12-16 | 1986-02-25 | 13 | Details |
| US4555810A | Distribution system for a local area network | Expired / Lapsed | 1982-08-23 | 1985-11-26 | 7 | Details |
| US4554564A | Semiconductor device and method of manufacturing same, as w… | Expired / Lapsed | 1982-02-05 | 1985-11-19 | 8 | Details |
| US4547694A | Low-loss cathode for a television camera tube | Expired / Lapsed | 1982-11-12 | 1985-10-15 | 14 | Details |
| US4536718A | Jitter reduction circuit for frequency synthesizer | Expired / Lapsed | 1983-01-31 | 1985-08-20 | 11 | Details |
| US4533849A | Ceramic bistable deflection element | Expired / Lapsed | 1983-10-24 | 1985-08-06 | 5 | Details |
| US4525417A | Carbon-containing sliding layer | Expired / Lapsed | 1983-02-24 | 1985-06-25 | 13 | Details |
| US4516252A | Device for imaging layers of a body | Expired / Lapsed | 1982-07-22 | 1985-05-07 | 16 | Details |
| USD278430S | Combined automobile tape player and radio receiver | Expired / Lapsed | 1982-12-20 | 1985-04-16 | 1 | Details |
| USD278429S | Dictating machine | Expired / Lapsed | 1982-09-27 | 1985-04-16 | 1 | Details |
| USD277960S | Clock radio receiver | Expired / Lapsed | 1982-09-23 | 1985-03-12 | 1 | Details |
| US4504936A | Modular data storage system | Expired / Lapsed | 1981-09-03 | 1985-03-12 | 9 | Details |
| US4500875A | Device for displaying digital information incorporating sel… | Expired / Lapsed | 1982-02-08 | 1985-02-19 | 9 | Details |
| US4499177A | Method of manufacturing a semiconductor device | Expired / Lapsed | 1983-07-27 | 1985-02-12 | 10 | Details |
| US4499574A | Record carrier with an optically readable information struc… | Expired / Lapsed | 1979-06-07 | 1985-02-12 | 6 | Details |
| US4486896A | X-Ray generator incorporating automatic correction of a dos… | Expired / Lapsed | 1982-08-09 | 1984-12-04 | 8 | Details |
| US4484353A | Method for controlling the information stream in a cell con… | Expired / Lapsed | 1982-11-18 | 1984-11-20 | 9 | Details |
| US4481529A | Tricolor video signal generator, such as a video game, usab… | Expired / Lapsed | 1982-05-27 | 1984-11-06 | 8 | Details |
| US4466748A | Thermal imaging apparatus | Expired / Lapsed | 1982-06-01 | 1984-08-21 | 16 | Details |
| US4460911A | Semiconductor device with multiple plate vertically aligned… | Expired / Lapsed | 1980-06-12 | 1984-07-17 | 23 | Details |
| US4459664A | Multiprocessor computer system with dynamic allocation of m… | Expired / Lapsed | 1982-02-23 | 1984-07-10 | 5 | Details |
| USD274518S | Intercommunication apparatus | Expired / Lapsed | 1982-02-22 | 1984-07-03 | 1 | Details |
| US4455630A | Device for forming an image by means of ultrasound | Expired / Lapsed | 1981-11-05 | 1984-06-19 | 4 | Details |
| US4446545A | Apparatus for reading a disk-shaped record carrier | Expired / Lapsed | 1982-04-05 | 1984-05-01 | 5 | Details |
| US4425043A | Device for detecting the position of an object | Expired / Lapsed | 1981-07-13 | 1984-01-10 | 9 | Details |
| US4423502A | Record carrier having an optically readable information str… | Expired / Lapsed | 1981-09-11 | 1983-12-27 | 14 | Details |
| US4417709A | Spreading device | Expired / Lapsed | 1981-03-17 | 1983-11-29 | 8 | Details |
| USD271486S | Dictating machine | Expired / Lapsed | 1981-04-02 | 1983-11-22 | 1 | Details |
| US4408341A | X-Ray examination apparatus having a movable X-ray source | Expired / Lapsed | 1981-11-12 | 1983-10-04 | 8 | Details |
| US4398289A | Method for the transmission of data packets | Expired / Lapsed | 1981-02-17 | 1983-08-09 | 3 | Details |
| USD269780S | Intercom speaker and receiver | Expired / Lapsed | 1979-09-27 | 1983-07-19 | 1 | Details |
| USD269344S | Clock radio receiver | Expired / Lapsed | 1981-03-13 | 1983-06-14 | 1 | Details |
| US4388539A | Integrated circuit comprising a plurality of voltage-curren… | Expired / Lapsed | 1981-02-13 | 1983-06-14 | 4 | Details |
| US4375088A | Optically readable record carrier with track variations whi… | Expired / Lapsed | 1980-04-14 | 1983-02-22 | 45 | Details |
| US4362359A | Coupling device for coupling signals into and out of a tran… | Expired / Lapsed | 1980-04-21 | 1982-12-07 | 3 | Details |
| US4361861A | Apparatus housing comprising a number of parallel component… | Expired / Lapsed | 1980-09-08 | 1982-11-30 | 5 | Details |
| US4356392A | Optical imaging system provided with an opto-electronic det… | Expired / Lapsed | 1980-06-11 | 1982-10-26 | 6 | Details |
| US4356422A | Acoustic transducer | Expired / Lapsed | 1980-06-02 | 1982-10-26 | 12 | Details |
| US4354157A | Method of and device for determining a nuclear spin density… | Expired / Lapsed | 1980-06-24 | 1982-10-12 | 8 | Details |
| US4353112A | Switched-mode voltage converter | Expired / Lapsed | 1979-09-04 | 1982-10-05 | 30 | Details |
| US4350998A | Device for differential image determination | Expired / Lapsed | 1980-07-02 | 1982-09-21 | 6 | Details |
| US4349750A | Switching circuit comprising a plurality of input channels … | Expired / Lapsed | 1980-01-14 | 1982-09-14 | 3 | Details |
| USD266089S | Radio receiver | Expired / Lapsed | 1980-06-27 | 1982-09-07 | 1 | Details |
| US4342087A | Indicator having belts, intended in particular for a radio … | Expired / Lapsed | 1980-05-08 | 1982-07-27 | 23 | Details |
| US4339746A | Alarm control center | Expired / Lapsed | 1980-11-14 | 1982-07-13 | 9 | Details |
| US4330880A | Apparatus for optically reading a disc-shaped record carrie… | Expired / Lapsed | 1980-06-27 | 1982-05-18 | 9 | Details |
| US4324142A | Circuit for processing the signals received by a mosaic of … | Expired / Lapsed | 1980-06-30 | 1982-04-13 | 3 | Details |
| USD263585S | Video compact cassette | Expired / Lapsed | 1979-10-12 | 1982-03-30 | 1 | Details |
| US4320342A | Magnet coil arrangement for generating linear magnetic grad… | Expired / Lapsed | 1979-09-14 | 1982-03-16 | 6 | Details |
| US4320423A | Apparatus for automatic repeated reproduction of sound on s… | Expired / Lapsed | 1978-10-23 | 1982-03-16 | 21 | Details |
| USD261650S | Clock radio receiver | Expired / Lapsed | 1979-08-30 | 1981-11-03 | 1 | Details |
| US4295152A | Optical coupler with a housing permitting adjustment of the… | Expired / Lapsed | 1979-06-01 | 1981-10-13 | 9 | Details |
| US4290075A | Optical recording device having several ablative recording … | Expired / Lapsed | 1979-07-16 | 1981-09-15 | 12 | Details |
| US4286318A | Control loop | Expired / Lapsed | 1979-05-21 | 1981-08-25 | 13 | Details |
| US4284891A | Gamma camera | Expired / Lapsed | 1979-12-03 | 1981-08-18 | 4 | Details |
| US4275405A | Semiconductor timing device with radioactive material at th… | Expired / Lapsed | 1976-11-16 | 1981-06-23 | 14 | Details |
| US4272776A | Semiconductor device and method of manufacturing same | Expired / Lapsed | 1972-05-18 | 1981-06-09 | 37 | Details |
| US4239587A | Method of manufacturing a thin-film magnetic head with a ni… | Expired / Lapsed | 1978-08-18 | 1980-12-16 | 4 | Details |
| US4238795A | Microwave range measuring system for measuring the distance… | Expired / Lapsed | 1978-10-24 | 1980-12-09 | 6 | Details |
| US4237498A | Method of addressing and/or locating information on a recor… | Expired / Lapsed | 1979-01-25 | 1980-12-02 | 11 | Details |
| US4236232A | Optical read apparatus for reading a disc-shaped record car… | Expired / Lapsed | 1979-01-31 | 1980-11-25 | 7 | Details |
| US4233261A | Method and device for manufacturing information carriers | Expired / Lapsed | 1978-02-23 | 1980-11-11 | 6 | Details |
| US4232392A | Radio transmission systems | Expired / Lapsed | 1978-08-30 | 1980-11-04 | 6 | Details |
| US4228319A | Automatic radio telephone system | Expired / Lapsed | 1978-10-26 | 1980-10-14 | 6 | Details |
| US4227532A | Device for crushing calculi in the urinary bladder | Expired / Lapsed | 1978-04-03 | 1980-10-14 | 2 | Details |
| US4222635A | Method and apparatus for producing liquid crystal displays,… | Expired / Lapsed | 1978-01-11 | 1980-09-16 | 3 | Details |
| US4218693A | Integrated logic circuit having interconnections of various… | Expired / Lapsed | 1978-01-09 | 1980-08-19 | 12 | Details |
| US4217641A | Correction for polychromatic X-ray distortion in CT images | Expired / Lapsed | 1978-04-28 | 1980-08-12 | 19 | Details |
| US4209804A | Record carrier containing information in an optically reada… | Expired / Lapsed | 1979-01-31 | 1980-06-24 | 9 | Details |
| US4206274A | Battery holder | Expired / Lapsed | 1978-12-11 | 1980-06-03 | 7 | Details |
| US4206374A | Synchronous motor | Expired / Lapsed | 1977-06-22 | 1980-06-03 | 15 | Details |
| US4204253A | Device for generating and correcting a user program | Expired / Lapsed | 1978-03-20 | 1980-05-20 | 6 | Details |
| US4201954A | Gas discharge laser for generating linearly polarized radia… | Expired / Lapsed | 1978-05-19 | 1980-05-06 | 4 | Details |
| US4199708A | Low-pressure mercury vapor discharge lamp | Expired / Lapsed | 1978-08-18 | 1980-04-22 | 8 | Details |
| US4191956A | Device for the display of data on a display apparatus | Expired / Lapsed | 1978-04-17 | 1980-03-04 | 15 | Details |
| US4188433A | Record carrier in disk form having cover layers | Expired / Lapsed | 1978-07-20 | 1980-02-12 | 5 | Details |
| USD254185S | Dictating machine | Expired / Lapsed | 1977-09-26 | 1980-02-12 | 1 | Details |
| USD254183S | Head-phone | Expired / Lapsed | 1977-07-07 | 1980-02-12 | 1 | Details |
| US4161741A | Semiconductor memory device | Expired / Lapsed | 1977-07-11 | 1979-07-17 | 27 | Details |
| US4160269A | Apparatus for optically reading a phase-modulated optical r… | Expired / Lapsed | 1977-05-27 | 1979-07-03 | 16 | Details |
| US4155097A | Method and arrangement for the redundancy-reducing coding o… | Expired / Lapsed | 1977-08-18 | 1979-05-15 | 12 | Details |
| US4152673A | Gas discharge laser | Expired / Lapsed | 1978-06-12 | 1979-05-01 | 4 | Details |
| US4151401A | PTC heating device having selectively variable temperature … | Expired / Lapsed | 1977-04-08 | 1979-04-24 | 10 | Details |
| US4149259A | Transversal filter for convoluted image reconstruction | Expired / Lapsed | 1978-05-12 | 1979-04-10 | 9 | Details |
| US4147927A | Self-regulating heating element | Expired / Lapsed | 1976-04-05 | 1979-04-03 | 4 | Details |
| US4145614A | Device for producing two- and/or three-dimensional images o… | Expired / Lapsed | 1977-10-05 | 1979-03-20 | 4 | Details |
| US4143940A | Device for coupling a radiation source to a monomode optica… | Expired / Lapsed | 1978-03-07 | 1979-03-13 | 5 | Details |
| US4142987A | Luminescent material dispersion | Expired / Lapsed | 1977-06-02 | 1979-03-06 | 3 | Details |
| US4142196A | Polychromatic monolithic semiconductor assembly | Expired / Lapsed | 1977-12-19 | 1979-02-27 | 9 | Details |
| US4140990A | Probe for selectively detecting vapors, water vapor in part… | Expired / Lapsed | 1977-02-10 | 1979-02-20 | 13 | Details |
| US4136388A | Data acquisition system for computed tomography | Expired / Lapsed | 1977-08-26 | 1979-01-23 | 18 | Details |
| US4135083A | Optical scanning device | Expired / Lapsed | 1977-04-14 | 1979-01-16 | 15 | Details |
| US4134134A | Apparatus for picture processing | Expired / Lapsed | 1977-06-08 | 1979-01-09 | 13 | Details |
| US4125418A | Utilization of a substrate alignment marker in epitaxial de… | Expired / Lapsed | 1976-09-23 | 1978-11-14 | 8 | Details |
| US4121296A | Digital signal processing arrangement | Expired / Lapsed | 1977-06-20 | 1978-10-17 | 2 | Details |
| US4118099A | Image coding and decoding using coherent codes | Expired / Lapsed | 1976-08-05 | 1978-10-03 | 8 | Details |
| US4103288A | Method for data transmission and a system for carrying out … | Expired / Lapsed | 1976-09-14 | 1978-07-25 | 18 | Details |
| US4101344A | Method of manufacturing a semiconductor device | Expired / Lapsed | 1976-12-27 | 1978-07-18 | 7 | Details |
| US4100378A | Cross-correlation arrangement | Expired / Lapsed | 1976-10-01 | 1978-07-11 | 5 | Details |
| US4099840A | Multilayer reflector for gas discharge laser | Expired / Lapsed | 1976-09-24 | 1978-07-11 | 7 | Details |
| US4095133A | Field emission device | Expired / Lapsed | 1977-03-24 | 1978-06-13 | 4 | Details |
| US4094010A | Optical multi-channel digital disc storage system | Expired / Lapsed | 1976-05-13 | 1978-06-06 | 16 | Details |
| US4092671A | Video player having plural safety devices actuated by unlat… | Expired / Lapsed | 1977-04-11 | 1978-05-30 | 2 | Details |
| US4090138A | FSK Transmitter having frequency band-limitation | Expired / Lapsed | 1976-06-21 | 1978-05-16 | 7 | Details |
| US4080044A | Device for coupling optical fibers | Expired / Lapsed | 1975-11-04 | 1978-03-21 | 2 | Details |
| US4079294A | Control circuit arrangement for generating a control signal… | Expired / Lapsed | 1976-06-17 | 1978-03-14 | 23 | Details |
| US4074149A | Peak detecting with constant fractional offset | Expired / Lapsed | 1974-11-08 | 1978-02-14 | 5 | Details |
| US4068222A | Circuit arrangement for automatic level control for optical… | Expired / Lapsed | 1975-11-04 | 1978-01-10 | 4 | Details |
| US4065808A | Network computer system | Expired / Lapsed | 1976-01-15 | 1977-12-27 | 4 | Details |
| US4064540A | Time registration arrangement provided with a television ca… | Expired / Lapsed | 1976-06-09 | 1977-12-20 | 6 | Details |
| US4063074A | Device for measuring radiation absorption or radiation emis… | Expired / Lapsed | 1975-09-04 | 1977-12-13 | 9 | Details |
| US4057833A | Centering detection system for an apparatus for playing opt… | Expired / Lapsed | 1976-03-23 | 1977-11-08 | 10 | Details |
| US4057063A | Device for sterilization by transuterine tube coagulation | Expired / Lapsed | 1976-02-27 | 1977-11-08 | 7 | Details |
| US4051377A | Scanning x-ray examination apparatus | Expired / Lapsed | 1975-12-18 | 1977-09-27 | 10 | Details |
| US4047159A | Data transmission systems | Expired / Lapsed | 1975-07-08 | 1977-09-06 | 12 | Details |
| US4041530A | Video disc with phase structure | Expired / Lapsed | 1975-09-30 | 1977-08-09 | 9 | Details |
| US4040681A | Magnetically levitated object | Expired / Lapsed | 1974-05-06 | 1977-08-09 | 14 | Details |
| US4039860A | Amplifier arrangement for detecting logic signals from a ca… | Expired / Lapsed | 1975-12-22 | 1977-08-02 | 7 | Details |
| US4040053A | Transponder system for the transfer of signalling informati… | Expired / Lapsed | 1975-08-18 | 1977-08-02 | 4 | Details |
| US4037252A | Apparatus for reading a disc-shaped record carrier with plu… | Expired / Lapsed | 1975-10-17 | 1977-07-19 | 15 | Details |
| US4034344A | Character thinning apparatus | Expired / Lapsed | 1975-11-03 | 1977-07-05 | 5 | Details |
| US4030811A | Device for coupling a light source to an optical fiber | Expired / Lapsed | 1976-04-09 | 1977-06-21 | 7 | Details |
| US4031330A | Digital radio transmission system | Expired / Lapsed | 1975-06-05 | 1977-06-21 | 11 | Details |
| US4023037A | Decoding composite images of three-dimensional objects by c… | Expired / Lapsed | 1975-03-13 | 1977-05-10 | 8 | Details |
| US4019197A | Semiconductor floating gate storage device with lateral ele… | Expired / Lapsed | 1975-12-04 | 1977-04-19 | 10 | Details |
| US4019181A | Transponder system | Expired / Lapsed | 1975-07-09 | 1977-04-19 | 8 | Details |
| USD244053S | Audio visual record player | Expired / Lapsed | 1975-01-30 | 1977-04-12 | 1 | Details |
| US4011008A | Display device comprising a layer of liquid crystal | Expired / Lapsed | 1974-04-12 | 1977-03-08 | 5 | Details |
| US4010317A | Apparatus for reading a record carrier in which information… | Expired / Lapsed | 1975-04-16 | 1977-03-01 | 9 | Details |
| USD243536S | Intercommunication apparatus | Expired / Lapsed | 1974-09-11 | 1977-03-01 | 1 | Details |
| US4007104A | Mesa fabrication process | Expired / Lapsed | 1975-10-22 | 1977-02-08 | 8 | Details |
| US4006430A | Circuit arrangement for converting a bridge unbalance into … | Expired / Lapsed | 1975-07-08 | 1977-02-01 | 17 | Details |
| US4005265A | Videophone system synchronizer | Expired / Lapsed | 1974-12-19 | 1977-01-25 | 11 | Details |
| US4004247A | Voltage-current converter | Expired / Lapsed | 1975-06-11 | 1977-01-18 | 5 | Details |
| US3999009A | Apparatus for playing a transparent optically encoded multi… | Expired / Lapsed | 1975-02-05 | 1976-12-21 | 8 | Details |
| US3995630A | Injection syringe with telescopic assembly between cartridg… | Expired / Lapsed | 1975-08-22 | 1976-12-07 | 4 | Details |
| US3992575A | Apparatus for optically reading a record carrier by means o… | Expired / Lapsed | 1974-11-26 | 1976-11-16 | 6 | Details |
| US3988606A | Digital filter device for processing binary-coded signal sa… | Expired / Lapsed | 1975-05-30 | 1976-10-26 | 11 | Details |
| US3980825A | System for the transmission of split-phase Manchester coded… | Expired / Lapsed | 1974-01-10 | 1976-09-14 | 6 | Details |
| US3978837A | Device for automatic speed control of a diesel engine | Expired / Lapsed | 1974-12-06 | 1976-09-07 | 10 | Details |
| US3974327A | Autofocus circuit for a videodisc playback device | Expired / Lapsed | 1975-03-03 | 1976-08-10 | 5 | Details |
| US3973199A | Prediction differential pulse code modulation system with a… | Expired / Lapsed | 1974-08-29 | 1976-08-03 | 13 | Details |
| US3973235A | Device for the detection of an acoustic image | Expired / Lapsed | 1974-04-15 | 1976-08-03 | 12 | Details |
| US3969575A | Opto-electronic focus detection system | Expired / Lapsed | 1974-12-06 | 1976-07-13 | 8 | Details |
| US3967628A | Skin electrode | Expired / Lapsed | 1975-02-03 | 1976-07-06 | 5 | Details |
| US3947299A | Method of manufacturing semiconductor devices | Expired / Lapsed | 1975-01-09 | 1976-03-30 | 25 | Details |
| US3940737A | Method of and device for skeletonizing characters | Expired / Lapsed | 1973-01-22 | 1976-02-24 | 7 | Details |
| US3938131A | Energizing circuit for a visual display element | Expired / Lapsed | 1974-10-03 | 1976-02-10 | 6 | Details |
| US3934480A | Rolling diaphragm seal between two relatively moving parts | Expired / Lapsed | 1973-07-11 | 1976-01-27 | 8 | Details |
| US3933046A | Logarithmic resistance-to-frequency converter | Expired / Lapsed | 1973-02-15 | 1976-01-20 | 11 | Details |
| US3931457A | Information carrier having addressed information tracks | Expired / Lapsed | 1973-03-26 | 1976-01-06 | 7 | Details |
| US3927327A | Exchange mechanism for film plates in an X-ray recording or… | Expired / Lapsed | 1974-03-18 | 1975-12-16 | 5 | Details |
| US3927373A | Paging system | Expired / Lapsed | 1973-11-20 | 1975-12-16 | 3 | Details |
| US3926508A | Manufacturing a cold light mirror by evaporating zns and si… | Expired / Lapsed | 1972-12-04 | 1975-12-16 | 3 | Details |
| US3924063A | Variable optical wedge for scanning a light beam in an appa… | Expired / Lapsed | 1974-04-29 | 1975-12-02 | 4 | Details |
| US3914683A | Current stabilizing arrangement with resistive-type current… | Expired / Lapsed | 1974-03-18 | 1975-10-21 | 20 | Details |
| US3913588A | Heart difibrillator with independently operating starting p… | Expired / Lapsed | 1971-03-25 | 1975-10-21 | 4 | Details |
| US3911353A | Current stabilizing arrangement | Expired / Lapsed | 1974-11-22 | 1975-10-07 | 7 | Details |
| US3906539A | Capacitance diode having a large capacitance ratio | Expired / Lapsed | 1974-02-07 | 1975-09-16 | 18 | Details |
| US3899771A | Method of character recognition by linear traverse employin… | Expired / Lapsed | 1974-06-17 | 1975-08-12 | 16 | Details |
| US3895350A | Method of and device for recognition of characters | Expired / Lapsed | 1974-03-08 | 1975-07-15 | 8 | Details |
| US3888548A | Anti-lock vehicle brake system | Expired / Lapsed | 1972-07-18 | 1975-06-10 | 13 | Details |
| US3878536A | Apparatus for improving the shape of characters formed by a… | Expired / Lapsed | 1972-07-10 | 1975-04-15 | 6 | Details |
| US3876841A | Apparatus for reading a flat reflecting record carrier with… | Expired / Lapsed | 1973-05-10 | 1975-04-08 | 7 | Details |
| US3876842A | Apparatus for reading a flat record carrier | Expired / Lapsed | 1973-03-28 | 1975-04-08 | 4 | Details |
| US3873383A | Integrated circuits with oxidation-junction isolation and c… | Expired / Lapsed | 1974-01-28 | 1975-03-25 | 9 | Details |
| US3859597A | System for the transmission of signals by pulse code modula… | Expired / Lapsed | 1973-06-01 | 1975-01-07 | 5 | Details |
| US3859602A | Device for simulating the original shape of a signal which … | Expired / Lapsed | 1973-03-05 | 1975-01-07 | 10 | Details |
| US3855533A | System including a transmitter and a receiver for the trans… | Expired / Lapsed | 1973-06-01 | 1974-12-17 | 13 | Details |
| US3854015A | Servo system for reading from a disc-shaped record carrier … | Expired / Lapsed | 1973-02-26 | 1974-12-10 | 13 | Details |
| US3849003A | Interferometer apparatus for measuring the roughness of a s… | Expired / Lapsed | 1973-04-06 | 1974-11-19 | 4 | Details |
| US3848591A | Electronically-controlled gas pressure meter | Expired / Lapsed | 1972-10-13 | 1974-11-19 | 9 | Details |
| US3845385A | Circuit arrangement for converting a bridge unbalance into … | Expired / Lapsed | 1973-03-16 | 1974-10-29 | 14 | Details |
| US3842012A | Method of manufacturing an oxide of yttrium and/or lanthanu… | Expired / Lapsed | 1972-12-14 | 1974-10-15 | 2 | Details |
| US3840752A | Electronically programable switching system | Expired / Lapsed | 1973-05-16 | 1974-10-08 | 11 | Details |
| US3839177A | Method of manufacturing etched patterns in thin layers havi… | Expired / Lapsed | 1972-04-05 | 1974-10-01 | 7 | Details |
| US3838379A | Pressure transducer for liquids or gases | Expired / Lapsed | 1973-01-08 | 1974-09-24 | 6 | Details |
| US3838342A | A switched frequency communications system with automatic p… | Expired / Lapsed | 1970-12-22 | 1974-09-24 | 5 | Details |
| US3836727A | Signal receiver for receiving signals of different frequency | Expired / Lapsed | 1973-06-29 | 1974-09-17 | 5 | Details |
| US3833769A | Apparatus for positional control of a reading head in a dev… | Expired / Lapsed | 1972-02-25 | 1974-09-03 | 16 | Details |
| US3832243A | Shape memory elements | Expired / Lapsed | 1971-01-14 | 1974-08-27 | 0 | Details |
| US3831092A | Transmitter for the transmission of signals by pulse code m… | Expired / Lapsed | 1973-03-07 | 1974-08-20 | 8 | Details |
| US3830971A | Line standard converter for converting a television signal … | Expired / Lapsed | 1972-08-30 | 1974-08-20 | 8 | Details |
| US3825761A | X-ray apparatus for displaying in slow motion tissues which… | Expired / Lapsed | 1973-07-05 | 1974-07-23 | 3 | Details |
| US3825855A | Frequency synthesizer with coarse stairstep frequency contr… | Expired / Lapsed | 1973-02-06 | 1974-07-23 | 10 | Details |
| US3824337A | Sensor for converting a physical pattern into an electrical… | Expired / Lapsed | 1973-07-20 | 1974-07-16 | 11 | Details |
| US3824570A | Magneto-optical transducer using bubble domains | Expired / Lapsed | 1973-03-12 | 1974-07-16 | 6 | Details |
| US3824569A | Matrix store incorporating noise-balancing | Expired / Lapsed | 1972-12-01 | 1974-07-16 | 7 | Details |
| US3824397A | Device for x-ray photography, in particular for mammography | Expired / Lapsed | 1972-05-03 | 1974-07-16 | 7 | Details |
| US3824468A | System for transmitting information in the prescribed frequ… | Expired / Lapsed | 1967-09-13 | 1974-07-16 | 9 | Details |
| US3822467A | Method of manufacturing a semiconductor device having a pat… | Expired / Lapsed | 1973-04-25 | 1974-07-09 | 14 | Details |
| US3822875A | Tiltable x-ray examination table | Expired / Lapsed | 1972-12-21 | 1974-07-09 | 7 | Details |
| US3822387A | Circuit for re-generating a current | Expired / Lapsed | 1972-06-02 | 1974-07-02 | 10 | Details |
| US3821004A | Nio and coo containing glass for television display cathode… | Expired / Lapsed | 1971-11-10 | 1974-06-28 | 2 | Details |
| US3815605A | Device and holder therefor for inserting a hollow coupling … | Expired / Lapsed | 1972-05-11 | 1974-06-11 | 14 | Details |
| US3816600A | Method of manufacturing metal fluorides and metal fluoride … | Expired / Lapsed | 1971-09-24 | 1974-06-11 | 0 | Details |
| US3813607A | Current amplifier | Expired / Lapsed | 1972-10-18 | 1974-05-28 | 10 | Details |
| US3809986A | Positioning device | Expired / Lapsed | 1973-02-15 | 1974-05-07 | 15 | Details |
| US3806810A | Reference signal generator for pulse code modulation | Expired / Lapsed | 1972-02-15 | 1974-04-23 | 9 | Details |
| US3798967A | Probe for measuring the flow of liquids | Expired / Lapsed | 1972-04-13 | 1974-03-26 | 10 | Details |
| US3798601A | Remote control system | Expired / Lapsed | 1972-04-19 | 1974-03-19 | 12 | Details |
| US3794406A | Method of and apparatus for optical multiple filtering | Expired / Lapsed | 1972-09-11 | 1974-02-26 | 12 | Details |
| US3787825A | Magnetic domain store | Expired / Lapsed | 1972-11-06 | 1974-01-22 | 8 | Details |
| US3787822A | Method of providing internal connections in a semiconductor… | Expired / Lapsed | 1972-04-13 | 1974-01-22 | 8 | Details |
| US3781589A | Field deflection circuit | Expired / Lapsed | 1971-11-15 | 1973-12-25 | 9 | Details |
| US3769555A | Electronic control device in particular for use in a variab… | Expired / Lapsed | 1972-02-04 | 1973-10-30 | 13 | Details |
| US3761879A | Bus transport system for selection information and data | Expired / Lapsed | 1972-05-08 | 1973-09-25 | 4 | Details |
| US3757144A | Its emitter and base electrodes switching circuit transisto… | Expired / Lapsed | 1972-01-14 | 1973-09-04 | 11 | Details |
| US3755001A | Method of making semiconductor devices with selective dopin… | Expired / Lapsed | 1971-07-08 | 1973-08-28 | 18 | Details |
| US3753005A | Integrated circuit comprising strip-like conductors | Expired / Lapsed | 1971-06-03 | 1973-08-14 | 10 | Details |
| US3751645A | Method of and device for the digital simulation of digital … | Expired / Lapsed | 1971-09-02 | 1973-08-07 | 4 | Details |
| US3751132A | Optical apparatus for symbol regonition comprising a plural… | Expired / Lapsed | 1971-01-28 | 1973-08-07 | 7 | Details |
| US3750160A | Keyboard with roll-over feature | Expired / Lapsed | 1971-11-03 | 1973-07-31 | 5 | Details |
| US3747203A | Methods of manufacturing a semiconductor device | Expired / Lapsed | 1970-11-13 | 1973-07-24 | 17 | Details |
| US3747073A | Electrical display devices | Expired / Lapsed | 1972-03-16 | 1973-07-17 | 13 | Details |
| US3745425A | Semiconductor devices | Expired / Lapsed | 1966-06-17 | 1973-07-10 | 6 | Details |
| US3742948A | Hypodermic syringe with radially movable blocking elements | Expired / Lapsed | 1970-08-10 | 1973-07-03 | 5 | Details |
| US3739241A | Electroluminescent semiconductor device containing current … | Expired / Lapsed | 1972-02-29 | 1973-06-12 | 5 | Details |
| US3739237A | Methods of manufacturing insulated gate field effect transi… | Expired / Lapsed | 1970-12-18 | 1973-06-12 | 13 | Details |
| US3737683A | Bucket bridge delay line with error compensation | Expired / Lapsed | 1972-03-13 | 1973-06-05 | 5 | Details |
| US3735349A | Method of and device for preparing characters for recogniti… | Expired / Lapsed | 1971-11-09 | 1973-05-22 | 13 | Details |
| US3730778A | Methods of manufacturing a semiconductor device | Expired / Lapsed | 1971-01-14 | 1973-05-01 | 0 | Details |
| US3729678A | Pcm system including a pulse pattern analyzer | Expired / Lapsed | 1971-07-20 | 1973-04-24 | 64 | Details |
| US3723801A | Measuring the beam landing characteristic of a shadow-mask … | Expired / Lapsed | 1970-07-16 | 1973-03-27 | 13 | Details |
| US3718843A | Compact semiconductor device for monolithic integrated circ… | Expired / Lapsed | 1971-07-08 | 1973-02-27 | 6 | Details |
| US3716780A | System for the accurate reproduction of pulse code modulati… | Expired / Lapsed | 1971-04-05 | 1973-02-13 | 0 | Details |
| US3716631A | Use of radioactive compounds to determine fat absorption | Expired / Lapsed | 1969-02-24 | 1973-02-13 | 5 | Details |
| US3715058A | Dosing apparatus | Expired / Lapsed | 1971-03-03 | 1973-02-06 | 11 | Details |
| US3710186A | Signal processing circuit | Expired / Lapsed | 1969-12-12 | 1973-01-09 | 13 | Details |
| US3707604A | Telecommunication system with time division multiplex | Expired / Lapsed | 1971-06-22 | 1972-12-26 | 6 | Details |
| US3702407A | A circuit for converting a variable frequency pulse train i… | Expired / Lapsed | 1970-07-27 | 1972-11-07 | 9 | Details |
| US3701988A | Character display device for television monitor | Expired / Lapsed | 1969-02-14 | 1972-10-31 | 5 | Details |
| US3693625A | Heart stimulator and heart-powered energy supply therefor | Expired / Lapsed | 1970-05-01 | 1972-09-26 | 8 | Details |
| US3686661A | Glow discharge matrix display with improved addressing means | Expired / Lapsed | 1970-07-06 | 1972-08-22 | 18 | Details |
| US3683306A | Temperature compensated semiconductor resistor containing n… | Expired / Lapsed | 1969-10-28 | 1972-08-08 | 8 | Details |
| US3676701A | Shift register | Expired / Lapsed | 1971-04-01 | 1972-07-11 | 6 | Details |
| US3673566A | Use of a plurality of scanning directions for character cen… | Expired / Lapsed | 1970-05-05 | 1972-06-27 | 8 | Details |
| US3671106A | Optical multiplex filter system | Expired / Lapsed | 1970-09-08 | 1972-06-20 | 0 | Details |
| US3670715A | Device for measuring the flow of blood | Expired / Lapsed | 1970-02-11 | 1972-06-20 | 8 | Details |
| US3661465A | Method and an arrangement for recognizing an object or its … | Expired / Lapsed | 1969-02-06 | 1972-05-09 | 11 | Details |
| US3660175A | Method of manufacturing a magnetically anisotropic magnet b… | Expired / Lapsed | 1970-09-11 | 1972-05-02 | 3 | Details |
| US3660603A | Speech-controlled bilateral amplifier | Expired / Lapsed | 1969-08-28 | 1972-05-02 | 11 | Details |
| US3653978A | Method of making semiconductor devices | Expired / Lapsed | 1969-03-07 | 1972-04-04 | 13 | Details |
| US3649831A | Device for determining the crystallographic directions in s… | Expired / Lapsed | 1969-06-23 | 1972-03-14 | 6 | Details |
| US3649886A | Semiconductor device having a semiconductor body of which a… | Expired / Lapsed | 1968-11-19 | 1972-03-14 | 10 | Details |
| US3644765A | Commutatorless direct current motor | Expired / Lapsed | 1970-03-20 | 1972-02-22 | 5 | Details |
| US3643218A | Cyclic group processing with internal priority | Expired / Lapsed | 1970-01-29 | 1972-02-15 | 4 | Details |
| US3632883A | Telecommunication exchange with time division multiplex | Expired / Lapsed | 1969-07-02 | 1972-01-04 | 4 | Details |
| US3631310A | Insulated gate field effect transistors | Expired / Lapsed | 1967-12-05 | 1971-12-28 | 8 | Details |
| US3629499A | Pattern noise reduction system | Expired / Lapsed | 1969-07-02 | 1971-12-21 | 10 | Details |
| US3624474A | Series motor on-off speed control circuit having means for … | Expired / Lapsed | 1968-03-22 | 1971-11-30 | 20 | Details |
| US3615560A | Methods of manufacturing photosensitive materials | Expired / Lapsed | 1968-11-18 | 1971-10-26 | 3 | Details |
| US3616345A | Method of manufacturing semiconductor devices in which a se… | Expired / Lapsed | 1968-02-26 | 1971-10-26 | 6 | Details |
| US3614746A | Memory addressing device using arbitrary directed graph str… | Expired / Lapsed | 1969-10-22 | 1971-10-19 | 8 | Details |
| US3609992A | Hermetically sealed box for maintaining a semiconductor rad… | Expired / Lapsed | 1969-08-12 | 1971-10-05 | 0 | Details |
| US3604263A | Device for measuring the flow intensity of circulating liqu… | Expired / Lapsed | 1969-01-28 | 1971-09-14 | 12 | Details |
| US3603668A | Composite diffraction grating formed from superimposed alig… | Expired / Lapsed | 1970-01-29 | 1971-09-07 | 3 | Details |
| US3603723A | Color television camera | Expired / Lapsed | 1968-05-29 | 1971-09-07 | 7 | Details |
| US3602982A | Method of manufacturing a semiconductor device and device m… | Expired / Lapsed | 1968-04-17 | 1971-09-07 | 8 | Details |
| US3602641A | Dark current compensation circuit | Expired / Lapsed | 1969-09-24 | 1971-08-31 | 8 | Details |
| US3602644A | "circuit for generating video markers from potentials to be… | Expired / Lapsed | 1969-03-05 | 1971-08-31 | 6 | Details |
| US3598904A | Method and device for changing a simultaneous television si… | Expired / Lapsed | 1968-07-17 | 1971-08-10 | 23 | Details |
| US3599028A | Mercury vapor discharge lamp employing europium activated c… | Expired / Lapsed | 1968-02-28 | 1971-08-10 | 2 | Details |
| US3596347A | Method of making insulated gate field effect transistors us… | Expired / Lapsed | 1968-08-19 | 1971-08-03 | 9 | Details |
| US3594780A | Digital to analog converter having capacitor charged by inp… | Expired / Lapsed | 1968-09-03 | 1971-07-20 | 12 | Details |
| US3591428A | Basic substance for the manufacture of a permanent magnet | Expired / Lapsed | 1968-11-26 | 1971-07-06 | 0 | Details |
| US3589733A | Apparatus for changing and playing back recorder tape magaz… | Expired / Lapsed | 1968-05-29 | 1971-06-29 | 28 | Details |
| US3590166A | Method of automatically establishing telephone connection t… | Expired / Lapsed | 1968-04-15 | 1971-06-29 | 2 | Details |
| US3587003A | An automatic frequency control system for a frequency modul… | Expired / Lapsed | 1969-09-30 | 1971-06-22 | 7 | Details |
| US3586416A | Light modulator by gated interferometry | Expired / Lapsed | 1968-07-18 | 1971-06-22 | 12 | Details |
| US3581733A | Heart catheterization device | Expired / Lapsed | 1968-12-11 | 1971-06-01 | 5 | Details |
| US3581091A | Neutron spectrometer employing two semiconductor counters i… | Expired / Lapsed | 1968-09-03 | 1971-05-25 | 1 | Details |
| US3577772A | Device for diagnostic examination by ultrasonic oscillations | Expired / Lapsed | 1967-05-08 | 1971-05-04 | 9 | Details |
| US3572522A | Pivotable magazine for workpieces | Expired / Lapsed | 1969-01-27 | 1971-03-30 | 3 | Details |
| US3571864A | Fastener | Expired / Lapsed | 1969-05-12 | 1971-03-23 | 6 | Details |
| US3569756A | Ion source having a plasma and gridlike electrode | Expired / Lapsed | 1967-06-28 | 1971-03-09 | 5 | Details |
| US3564291A | Electronic relay arrangement | Expired / Lapsed | 1967-11-20 | 1971-02-16 | 14 | Details |
| US3560977A | Aerial follower device | Expired / Lapsed | 1969-04-03 | 1971-02-02 | 0 | Details |
| US3560659A | System for the transmission of analogue signals by means of… | Expired / Lapsed | 1968-09-03 | 1971-02-02 | 18 | Details |
| US3555276A | X-ray diagnostic apparatus for urological examinations | Expired / Lapsed | 1968-03-11 | 1971-01-12 | 5 | Details |
| US3553030A | Radiation-sensitive semiconductor device | Expired / Lapsed | 1968-11-12 | 1971-01-05 | 0 | Details |
| US3553518A | Image intensifiers for night vision | Expired / Lapsed | 1968-08-09 | 1971-01-05 | 3 | Details |
| US3553457A | Image intensifier including matrix of elongated electrodes … | Expired / Lapsed | 1968-07-10 | 1971-01-05 | 6 | Details |
| US3543583A | Circuit arrangement for connecting devices for picking up m… | Expired / Lapsed | 1968-06-11 | 1970-12-01 | 0 | Details |
| US3544858A | Insulated gate field-effect transistor comprising a mesa ch… | Expired / Lapsed | 1968-05-08 | 1970-12-01 | 0 | Details |
| US3538417A | Bridge type frequency converter | Expired / Lapsed | 1968-03-05 | 1970-11-03 | 0 | Details |
| US3534472A | Method of making an electrical resistor | Expired / Lapsed | 1968-05-16 | 1970-10-20 | 0 | Details |
| US3535698A | Apparatus for adjusting a clock pulse generator with respec… | Expired / Lapsed | 1967-12-05 | 1970-10-20 | 0 | Details |
| US3535636A | Transceiver which tests both transmitting and receiving fre… | Expired / Lapsed | 1967-11-30 | 1970-10-20 | 0 | Details |
| US3529154A | Electron beam apparatus having means to selectively utilize… | Expired / Lapsed | 1967-08-11 | 1970-09-15 | 0 | Details |
| US3525987A | Floating shoe for one or more recording heads | Expired / Lapsed | 1968-06-05 | 1970-08-25 | 0 | Details |
| US3516007A | Stepwise adjustable phase controlled oscillator loop | Expired / Lapsed | 1968-01-30 | 1970-06-02 | 0 | Details |
| US3500830A | Injection syringe | Expired / Lapsed | 1967-07-19 | 1970-03-17 | 0 | Details |
| US3499977A | Dual magnet head arrangement electrically connected togethe… | Expired / Lapsed | 1966-10-17 | 1970-03-10 | 0 | Details |
| US3499703A | Radiation beam positioning apparatus | Expired / Lapsed | 1966-07-08 | 1970-03-10 | 0 | Details |
| US3496735A | Ejector in refrigerating device | Expired / Lapsed | 1968-07-05 | 1970-02-24 | 0 | Details |
| US3497759A | Image intensifiers | Expired / Lapsed | 1968-05-14 | 1970-02-24 | 0 | Details |
| US3497273A | Hydrodynamic bearing for axial and radial loads | Expired / Lapsed | 1968-03-05 | 1970-02-24 | 0 | Details |
| US3497699A | Device comprising an image intensifying tube having a plura… | Expired / Lapsed | 1967-01-17 | 1970-02-24 | 0 | Details |
| US3491184A | Method of manufacturing heat exchangers | Expired / Lapsed | 1966-10-31 | 1970-01-20 | 0 | Details |
| US3487258A | Image intensifier with channel secondary emission electron … | Expired / Lapsed | 1968-02-20 | 1969-12-30 | 0 | Details |
| US3484276A | Apparatus for and method of providing a melted insulating c… | Expired / Lapsed | 1966-07-21 | 1969-12-16 | 0 | Details |
| US3469104A | Device for determining the structure of thin,partly transpa… | Expired / Lapsed | 1966-01-14 | 1969-09-23 | 0 | Details |
| US3464230A | Systems for producing cold and ejectors in such systems | Expired / Lapsed | 1967-06-28 | 1969-09-02 | 0 | Details |
| US3458704A | Angular position measuring device employing optical measure… | Expired / Lapsed | 1967-08-03 | 1969-07-29 | 0 | Details |
| US3456199A | Two level to three level pulse code converter utilizing mod… | Expired / Lapsed | 1966-03-08 | 1969-07-15 | 1 | Details |
| US3456200A | Frequency divider having a first decade with an adjustable … | Expired / Lapsed | 1966-02-09 | 1969-07-15 | 0 | Details |
| US3449510A | Circuit arrangement for producing a dissymmetrical switchin… | Expired / Lapsed | 1965-09-16 | 1969-06-10 | 0 | Details |
| US3447339A | Cold producing systems | Expired / Lapsed | 1967-05-12 | 1969-06-03 | 0 | Details |
| US3441667A | Radiographic display device with areas of interest set off … | Expired / Lapsed | 1965-07-26 | 1969-04-29 | 0 | Details |
| US3439919A | Recording and/or play-back apparatus employing a record car… | Expired / Lapsed | 1966-07-11 | 1969-04-22 | 0 | Details |
| US3440353A | Radio-transmission system | Expired / Lapsed | 1965-06-18 | 1969-04-22 | 0 | Details |
| US3416047A | Opto-pn junction semiconductor having greater recombination… | Expired / Lapsed | 1966-01-20 | 1968-12-10 | 0 | Details |
| US3416008A | Storage circuit employing cross-connected opposite conducti… | Expired / Lapsed | 1964-09-29 | 1968-12-10 | 0 | Details |
| US3409875A | Transmission system for transmitting pulses | Expired / Lapsed | 1965-03-04 | 1968-11-05 | 0 | Details |
| US3398351A | High voltage rectifier assembly having tubular capacitor co… | Expired / Lapsed | 1965-05-24 | 1968-08-20 | 0 | Details |
| US3396343A | Optical maser with an adjusting mechanism for a mirror | Expired / Lapsed | 1963-09-25 | 1968-08-06 | 0 | Details |
| US3394898A | Magazine loading mechanism for a tape recorder | Expired / Lapsed | 1966-07-20 | 1968-07-30 | 0 | Details |
| US3387162A | Photocathode comprising channeled matrix with conductive in… | Expired / Lapsed | 1964-10-28 | 1968-06-04 | 0 | Details |
| US3387226A | Laser comprising a block of insulating material having a ch… | Expired / Lapsed | 1963-07-15 | 1968-06-04 | 2 | Details |
| US3384827A | Adjustable frequency divider | Expired / Lapsed | 1964-10-23 | 1968-05-21 | 2 | Details |
| US3381288A | Apparatus for the remote indication of the position of a ro… | Expired / Lapsed | 1963-03-21 | 1968-04-30 | 1 | Details |
| US3376083A | Axial bearing | Expired / Lapsed | 1966-03-01 | 1968-04-02 | 0 | Details |
| US3372624A | Rolling diaphragm device with inertia force compensating me… | Expired / Lapsed | 1965-11-30 | 1968-03-12 | 0 | Details |
| US3365666A | Transmission channel switching device responsive to channel… | Expired / Lapsed | 1965-07-12 | 1968-01-23 | 0 | Details |
| US3363760A | Method of making a double diffused semicondictor device by … | Expired / Lapsed | 1967-05-15 | 1968-01-16 | 0 | Details |
| US3364064A | Method of improving the solderability of a nickel surface | Expired / Lapsed | 1963-07-30 | 1968-01-16 | 2 | Details |
| US3351827A | Opto-electronic semiconductor with improved emitter-region | Expired / Lapsed | 1965-08-13 | 1967-11-07 | 2 | Details |
| US3351779A | Circuit for suppression of voltage peaks across a rectifier | Expired / Lapsed | 1964-12-15 | 1967-11-07 | 2 | Details |
| US3348074A | Photosensitive semiconductor device employing induced space… | Expired / Lapsed | 1965-06-30 | 1967-10-17 | 2 | Details |
| US3343254A | Method of narrowly spacing electrically conductive layers | Expired / Lapsed | 1964-02-20 | 1967-09-26 | 2 | Details |
| US3344352A | Transmission system for converting a binary information sig… | Expired / Lapsed | 1963-05-03 | 1967-09-26 | 2 | Details |
| US3333209A | Oscillator system for controlling the frequency of an oscil… | Expired / Lapsed | 1964-12-21 | 1967-07-25 | 1 | Details |
| US3333105A | Device of the kind in which the distance of an object from … | Expired / Lapsed | 1964-04-23 | 1967-07-25 | 2 | Details |
| US3327375A | Apparatus for inserting components into a circuit board | Expired / Lapsed | 1965-07-15 | 1967-06-27 | 2 | Details |
| US3327633A | Dosing pump operating in opposite phases for dosing liquid … | Expired / Lapsed | 1965-02-12 | 1967-06-27 | 2 | Details |
| US3314773A | Low temperature system | Expired / Lapsed | 1965-11-30 | 1967-04-18 | 2 | Details |
| US3314594A | Apparatus for compressing or expanding a medium, which appa… | Expired / Lapsed | 1964-09-30 | 1967-04-18 | 2 | Details |
| US3311442A | Pulse transmission system employing quadrature modulation a… | Expired / Lapsed | 1963-02-05 | 1967-03-28 | 2 | Details |
| US3307983A | Method of manufacturing a photosensitive device | Expired / Lapsed | 1964-03-10 | 1967-03-07 | 4 | Details |
| US3307171A | Apparatus for energizing an electrical load device | Expired / Lapsed | 1963-06-20 | 1967-02-28 | 2 | Details |
| US3305639A | Arrangement for scanning a set of apparatuses partitioned i… | Expired / Lapsed | 1963-05-03 | 1967-02-21 | 2 | Details |
| US3302046A | Step motor | Expired / Lapsed | 1964-09-29 | 1967-01-31 | 2 | Details |
| US3299335A | Self-starting direct-current motors having no commutator | Expired / Lapsed | 1964-03-10 | 1967-01-17 | 2 | Details |
| US3296511A | Arrangement for the reproduction of ultrasonic oscillations | Expired / Lapsed | 1963-09-11 | 1967-01-03 | 2 | Details |
| US3293377A | Device for reducing tape friction in a video tape recorder | Expired / Lapsed | 1963-04-08 | 1966-12-20 | 2 | Details |
| US3290608A | Circuit for coupling a transistor to an angular modulation … | Expired / Lapsed | 1964-04-22 | 1966-12-06 | 2 | Details |
| US3272512A | Transit latch for phonograph | Expired / Lapsed | 1965-09-09 | 1966-09-13 | 2 | Details |
| US3272089A | Device for compressing or expanding a medium | Expired / Lapsed | 1964-11-12 | 1966-09-13 | 2 | Details |
| US3268733A | Photoelectrically controlled sawtooth wave oscillator | Expired / Lapsed | 1963-11-04 | 1966-08-23 | 2 | Details |
| US3268866A | Circuit arrangement for controlling switching matrices | Expired / Lapsed | 1961-03-22 | 1966-08-23 | 2 | Details |
| US3263217A | Remote control system | Expired / Lapsed | 1961-03-22 | 1966-07-26 | 0 | Details |
| US3261769A | Method of forming metallic liners by electrodeposition in a… | Expired / Lapsed | 1962-08-31 | 1966-07-19 | 2 | Details |
| US3260876A | Image intensifier secondary emissive matrix internally coat… | Expired / Lapsed | 1964-04-15 | 1966-07-12 | 0 | Details |
| US3249911A | Method and device for determining the position of sound sou… | Expired / Lapsed | 1963-08-26 | 1966-05-03 | 2 | Details |
| US3249937A | Device for regulating the frequency of an oscillator substa… | Expired / Lapsed | 1963-08-06 | 1966-05-03 | 2 | Details |
| US3247459A | Plural laser amplifiers in tandem | Expired / Lapsed | 1964-05-01 | 1966-04-19 | 2 | Details |
| US3247456A | Directional electric tachometer including means for produci… | Expired / Lapsed | 1962-06-28 | 1966-04-19 | 2 | Details |
| US3244919A | Rotor for small electric motors | Expired / Lapsed | 1963-03-12 | 1966-04-05 | 2 | Details |
| US3241379A | Device of the kind comprising rolling diaphragm seals betwe… | Expired / Lapsed | 1962-06-12 | 1966-03-22 | 2 | Details |
| US3241087A | Variable frequency transistor multivibrator | Expired / Lapsed | 1963-04-22 | 1966-03-15 | 2 | Details |
| US3238503A | Frequency responsive signalling system employing selective … | Expired / Lapsed | 1960-02-23 | 1966-03-01 | 2 | Details |
| US3235733A | Photosensitive radiation tracker using plural prisms | Expired / Lapsed | 1961-07-10 | 1966-02-15 | 1 | Details |
| US3230957A | High frequency therapeutic apparatus | Expired / Lapsed | 1961-02-20 | 1966-01-25 | 2 | Details |
| US3228230A | Integrator with automatic compensation of the variation of … | Expired / Lapsed | 1962-01-04 | 1966-01-11 | 2 | Details |
| US3229226A | Free-running controlled rectifier inverter circuit | Expired / Lapsed | 1961-04-07 | 1966-01-11 | 2 | Details |
| US3229256A | Device for automatic ascertainment of an interruption in a … | Expired / Lapsed | 1961-02-03 | 1966-01-11 | 2 | Details |
| US3227634A | Method of manufacturing moulds for pressing phonograph reco… | Expired / Lapsed | 1962-10-03 | 1966-01-04 | 2 | Details |
| US3225258A | High tension direct current generator with circuit elements… | Expired / Lapsed | 1962-12-06 | 1965-12-21 | 2 | Details |
| US3224844A | Zone-melting method for metal compounds | Expired / Lapsed | 1962-02-28 | 1965-12-21 | 2 | Details |
| US3223907A | Apparatus for the production of ultrasonic oscillations | Expired / Lapsed | 1962-10-01 | 1965-12-14 | 1 | Details |
| US3223525A | Method of manufacturing, by photographic means, external, e… | Expired / Lapsed | 1960-07-11 | 1965-12-14 | 2 | Details |
| US3221283A | Pressure-measuring boxes | Expired / Lapsed | 1961-09-18 | 1965-11-30 | 2 | Details |
| US3218616A | Magnetoresistive readout of thinfilm memories | Expired / Lapsed | 1962-07-13 | 1965-11-16 | 2 | Details |
| US3213207A | Stereophonic phonograph transducer | Expired / Lapsed | 1959-03-04 | 1965-10-19 | 2 | Details |
| US3207666A | Method of producing dry free flowing preparations which are… | Expired / Lapsed | 1960-04-11 | 1965-09-21 | 1 | Details |
| US3204858A | Piston cylinder means with fluid-coupled drive means and ro… | Expired / Lapsed | 1963-06-21 | 1965-09-07 | 2 | Details |
| US3204241A | Radio navigation apparatus | Expired / Lapsed | 1963-02-25 | 1965-08-31 | 2 | Details |
| US3199052A | Crystal oscillator | Expired / Lapsed | 1961-09-11 | 1965-08-03 | 2 | Details |
| US3199081A | Circuit arrangement for giving permission to transmit to on… | Expired / Lapsed | 1961-03-06 | 1965-08-03 | 1 | Details |
| US3189834A | Circuit arrangement for shifting a pulse occurring at an ar… | Expired / Lapsed | 1961-01-11 | 1965-06-15 | 2 | Details |
| US3187164A | Device for the protection of electrical apparatus | Expired / Lapsed | 1962-12-05 | 1965-06-01 | 1 | Details |
| US3181033A | Overvoltage protection circuit | Expired / Lapsed | 1961-11-15 | 1965-04-27 | 2 | Details |
| US3179780A | Device for heating deep-frozen eatables with the aid of mic… | Expired / Lapsed | 1961-11-03 | 1965-04-20 | 2 | Details |
| US3179575A | Method of producing silver layer on non-metallic electrical… | Expired / Lapsed | 1960-07-11 | 1965-04-20 | 2 | Details |
| US3178796A | Method and device for the machine assembling of crystal dio… | Expired / Lapsed | 1960-05-12 | 1965-04-20 | 2 | Details |
| US3177409A | Circuit arrangement for the selection of one of a number of… | Expired / Lapsed | 1960-04-06 | 1965-04-06 | 2 | Details |
| US3168736A | Radar transceiver device | Expired / Lapsed | 1960-01-12 | 1965-02-02 | 2 | Details |
| US3165684A | Stepping motor with bistable triggering | Expired / Lapsed | 1961-07-03 | 1965-01-12 | 2 | Details |
| US3163489A | Electrothermal printing or recording apparatus | Expired / Lapsed | 1962-07-09 | 1964-12-29 | 2 | Details |
| US3154753A | Crystal-stabilized oscillator of which the frequency can be… | Expired / Lapsed | 1960-11-22 | 1964-10-27 | 2 | Details |
| US3152223A | Magnetic recording of video signals with means for providin… | Expired / Lapsed | 1962-05-10 | 1964-10-06 | 0 | Details |
| US3142987A | Semiconductor thermometer | Expired / Lapsed | 1962-08-13 | 1964-08-04 | 1 | Details |
| US3141840A | Device for producing ferromagnetic particles | Expired / Lapsed | 1961-03-31 | 1964-07-21 | 2 | Details |
| US3140977A | Fungicidal compositions containing triphenyl compounds | Expired / Lapsed | 1961-05-15 | 1964-07-14 | 2 | Details |
| US3133711A | Magnetic tape dictating machine | Expired / Lapsed | 1962-03-29 | 1964-05-19 | 2 | Details |
| US3131310A | Transistor circuit for generating narrow pulses | Expired / Lapsed | 1960-05-16 | 1964-04-28 | 2 | Details |
| US3130073A | Method of providing molybdenum wire with a carbon coating | Expired / Lapsed | 1961-03-21 | 1964-04-21 | 2 | Details |
| US3119982A | Receiver circuits for selective calling | Expired / Lapsed | 1959-07-28 | 1964-01-28 | 2 | Details |
| US3109754A | Resistor | Expired / Lapsed | 1960-12-19 | 1963-11-05 | 2 | Details |
| US3102828A | Method of manufacturing semiconductor bodies | Expired / Lapsed | 1960-06-01 | 1963-09-03 | 2 | Details |
| US3102227A | Arrangement for deriving an adjustable partial voltage from… | Expired / Lapsed | 1958-02-28 | 1963-08-27 | 2 | Details |
| US3097999A | Organo-tin compositions and method for treating plants | Expired / Lapsed | 1962-04-12 | 1963-07-16 | 2 | Details |
| US3098216A | Transistor common-emitter gate circuit with inductive load | Expired / Lapsed | 1959-07-13 | 1963-07-16 | 2 | Details |
| US3092779A | Circuits for converting electric signals logarithmically fo… | Expired / Lapsed | 1959-07-03 | 1963-06-04 | 1 | Details |
| US3091699A | Photoelectric device for indicating spots on a surface | Expired / Lapsed | 1960-08-31 | 1963-05-28 | 2 | Details |
| US3087985A | Color pick-up tube with circuit for minimizing cross-talk | Expired / Lapsed | 1959-01-26 | 1963-04-30 | 2 | Details |
| US3088036A | Particle counting apparatus | Expired / Lapsed | 1957-05-27 | 1963-04-30 | 2 | Details |
| US3085980A | Ferromagnetic material | Expired / Lapsed | 1959-06-01 | 1963-04-16 | 2 | Details |
| US3080640A | Method of manufacturing semi-conductive electrode systems | Expired / Lapsed | 1958-10-31 | 1963-03-12 | 2 | Details |
| US3081418A | Semi-conductor device | Expired / Lapsed | 1957-08-20 | 1963-03-12 | 2 | Details |
| US3078195A | Transistor | Expired / Lapsed | 1955-03-23 | 1963-02-19 | 2 | Details |
| US3078397A | Transistor | Expired / Lapsed | 1955-02-21 | 1963-02-19 | 2 | Details |
| US3074826A | Method of producing semi-conductive devices, more particula… | Expired / Lapsed | 1959-07-03 | 1963-01-22 | 2 | Details |
| US3075084A | Magnetic core counting circuit | Expired / Lapsed | 1958-12-05 | 1963-01-22 | 1 | Details |
| US3065752A | High frequency therapeutic radiator | Expired / Lapsed | 1960-10-24 | 1962-11-27 | 0 | Details |
| US3049677A | Pulsing circuit using punch-through transistor | Expired / Lapsed | 1956-06-25 | 1962-08-14 | 0 | Details |
| US3047439A | Silicon carbide semiconductor device | Expired / Lapsed | 1959-07-31 | 1962-07-31 | 2 | Details |
| US3043958A | Circuit element | Expired / Lapsed | 1960-09-12 | 1962-07-10 | 2 | Details |
| US3033660A | Method and apparatus for drawing crystals from a melt | Expired / Lapsed | 1960-04-06 | 1962-05-08 | 2 | Details |
| US3033034A | Resistance strain gauge operating with transformation | Expired / Lapsed | 1959-03-30 | 1962-05-08 | 0 | Details |
| US3031483A | Method of producing organic tin compounds and preparations … | Expired / Lapsed | 1958-11-13 | 1962-04-24 | 2 | Details |
| US3024299A | Cold press bonded semi-conductor housing joint | Expired / Lapsed | 1958-03-26 | 1962-03-06 | 0 | Details |
| US3023890A | Container consisting of a crate box with detachable walls | Expired / Lapsed | 1957-09-30 | 1962-03-06 | 0 | Details |
| US3019977A | Parallel-operating synchronous digital computer capable of … | Expired / Lapsed | 1958-03-17 | 1962-02-06 | 0 | Details |
| US3020117A | System for controlling a plurality of writing heads | Expired / Lapsed | 1957-05-31 | 1962-02-06 | 0 | Details |
| US3020352A | Single sideband equipment for speech transmission | Expired / Lapsed | 1957-03-15 | 1962-02-06 | 0 | Details |
| US3015760A | Semi-conductor devices | Expired / Lapsed | 1960-06-06 | 1962-01-02 | 2 | Details |
| US3015697A | Arrangement in automatic signalling systems for establishin… | Expired / Lapsed | 1957-04-22 | 1962-01-02 | 0 | Details |
| US3013976A | Method of producing anisotropic ferromagnetic bodies from f… | Expired / Lapsed | 1957-05-29 | 1961-12-19 | 1 | Details |
| US3006789A | Method of producing transistors | Expired / Lapsed | 1959-06-10 | 1961-10-31 | 2 | Details |
| US3001077A | Energy detector | Expired / Lapsed | 1956-05-22 | 1961-09-19 | 0 | Details |
| US2999937A | X-ray apparatus | Expired / Lapsed | 1958-10-20 | 1961-09-12 | 0 | Details |
| US2995679A | Circuit arrangement for generating a sawtooth current in an… | Expired / Lapsed | 1956-06-19 | 1961-08-08 | 0 | Details |
| US2991400A | Ultrasonic transducer | Expired / Lapsed | 1959-04-20 | 1961-07-04 | 0 | Details |
| US2991374A | Electrical memory system utilizing free charge storage | Expired / Lapsed | 1956-12-03 | 1961-07-04 | 0 | Details |
| US2990502A | Method of alloying a rectifying connection to a semi-conduc… | Expired / Lapsed | 1958-03-03 | 1961-06-27 | 2 | Details |
| US2986935A | Radiation pyrometer | Expired / Lapsed | 1953-12-18 | 1961-06-06 | 0 | Details |
| US2982814A | Apparatus for determining the composition and condition of … | Expired / Lapsed | 1958-02-14 | 1961-05-02 | 0 | Details |
| US2974308A | Magnetic memory device and magnetic circuit therefor | Expired / Lapsed | 1955-03-17 | 1961-03-07 | 0 | Details |
| US2973571A | Current conductor | Expired / Lapsed | 1954-08-26 | 1961-03-07 | 0 | Details |
| US2971251A | Semi-conductive device | Expired / Lapsed | 1955-06-20 | 1961-02-14 | 0 | Details |
| US2970761A | Digit indicator | Expired / Lapsed | 1958-10-09 | 1961-02-07 | 0 | Details |
| US2967945A | Variable electric impedance | Expired / Lapsed | 1958-11-13 | 1961-01-10 | 0 | Details |
| US2965843A | Timer arrangement | Expired / Lapsed | 1955-12-22 | 1960-12-20 | 0 | Details |
| US2964635A | Infra-red-radiation polarizer | Expired / Lapsed | 1958-09-08 | 1960-12-13 | 0 | Details |
| US2956863A | Apparatus for the manufacture of single crystals | Expired / Lapsed | 1957-10-09 | 1960-10-18 | 2 | Details |
| US2957152A | Radiation-sensitive device and method of making | Expired / Lapsed | 1957-03-13 | 1960-10-18 | 2 | Details |
| US2957044A | Optical scanning device | Expired / Lapsed | 1956-10-19 | 1960-10-18 | 0 | Details |
| US2956912A | Lead sulphide semi-conductive bodies and method of making s… | Expired / Lapsed | 1956-04-26 | 1960-10-18 | 1 | Details |
| US2951957A | Synchronous motor | Expired / Lapsed | 1957-11-22 | 1960-09-06 | 0 | Details |
| US2951995A | Circuit for controlling the resonance frequency of an oscil… | Expired / Lapsed | 1957-09-16 | 1960-09-06 | 0 | Details |
| US2951773A | Method of coating electrical discharge tubes | Expired / Lapsed | 1956-02-07 | 1960-09-06 | 2 | Details |
| US2948815A | Circuit arrangement comprising a phototransistor | Expired / Lapsed | 1956-01-23 | 1960-08-09 | 0 | Details |
| US2944166A | Bistable trigger circuit | Expired / Lapsed | 1957-09-19 | 1960-07-05 | 0 | Details |
| US2943480A | Arrangement for checking the zero constancy of wheatstone i… | Expired / Lapsed | 1956-11-21 | 1960-07-05 | 0 | Details |
| US2944153A | Energy calibration source holder | Expired / Lapsed | 1955-04-04 | 1960-07-05 | 0 | Details |
| US2935605A | System for the radio-transmission of information | Expired / Lapsed | 1956-02-08 | 1960-05-03 | 0 | Details |
| US2920259A | Direct current converter | Expired / Lapsed | 1956-11-28 | 1960-01-05 | 0 | Details |
| US2917684A | Semi-conductive electrode system | Expired / Lapsed | 1956-09-05 | 1959-12-15 | 2 | Details |
| US2916705A | Electric circuit arrangement for generating substantially l… | Expired / Lapsed | 1956-05-22 | 1959-12-08 | 0 | Details |
| US2915746A | Radar relay for transmitting radar images | Expired / Lapsed | 1953-11-05 | 1959-12-01 | 0 | Details |
| US2915749A | Radar receiver comprising a position indicator | Expired / Lapsed | 1953-01-02 | 1959-12-01 | 0 | Details |
| US2914675A | Element for correcting electron-optical systems | Expired / Lapsed | 1956-03-14 | 1959-11-24 | 2 | Details |
| US2912521A | Magnetic recording apparatus | Expired / Lapsed | 1957-07-29 | 1959-11-10 | 0 | Details |
| US2907880A | Circuit-arrangement for measuring voltages | Expired / Lapsed | 1956-03-21 | 1959-10-06 | 0 | Details |
| US2907831A | Single-sideband system for the transmission of speech | Expired / Lapsed | 1955-10-24 | 1959-10-06 | 0 | Details |
| US2907834A | Magnetic reproducing head | Expired / Lapsed | 1955-10-12 | 1959-10-06 | 0 | Details |
| US2907988A | Magnetic memory device | Expired / Lapsed | 1955-09-28 | 1959-10-06 | 0 | Details |
| US2907895A | Transistor trigger circuit | Expired / Lapsed | 1955-09-08 | 1959-10-06 | 0 | Details |
| US2904758A | Circuit arrangement for converting impedances | Expired / Lapsed | 1956-10-08 | 1959-09-15 | 0 | Details |
| US2904690A | Device for determining the relative deviation in percent of… | Expired / Lapsed | 1955-12-22 | 1959-09-15 | 0 | Details |
| US2901543A | Radio system comprising a main station and a plurality of s… | Expired / Lapsed | 1955-06-07 | 1959-08-25 | 0 | Details |
| US2901598A | Radio-transmitter for frequency-shift telegraphy made opera… | Expired / Lapsed | 1954-05-05 | 1959-08-25 | 0 | Details |
| US2900344A | Making anisotropic permanent magnets | Expired / Lapsed | 1953-07-29 | 1959-08-18 | 2 | Details |
| US2897494A | Radiator for short-wave devices | Expired / Lapsed | 1957-06-17 | 1959-07-28 | 0 | Details |
| US2896451A | Device for measuring the flow speed of a liquid | Expired / Lapsed | 1956-06-08 | 1959-07-28 | 0 | Details |
| US2897429A | Supply circuit transistor current control for electric loads | Expired / Lapsed | 1954-06-07 | 1959-07-28 | 0 | Details |
| US2890403A | Transistor pulse generator | Expired / Lapsed | 1956-01-26 | 1959-06-09 | 0 | Details |
| US2890353A | Transistor switching circuit | Expired / Lapsed | 1954-10-20 | 1959-06-09 | 0 | Details |
| US2887596A | Television camera tube | Expired / Lapsed | 1956-05-10 | 1959-05-19 | 2 | Details |
| US2885855A | Hot-gas reciprocating machine of the displacer-piston type | Expired / Lapsed | 1954-11-02 | 1959-05-12 | 0 | Details |
| US2882419A | Image reproducing device | Expired / Lapsed | 1956-08-20 | 1959-04-14 | 0 | Details |
| US2877392A | Semi-conductor device | Expired / Lapsed | 1954-12-07 | 1959-03-10 | 0 | Details |
| US2873510A | Method of manufacturing seals for electric discharge tubes | Expired / Lapsed | 1955-09-06 | 1959-02-17 | 2 | Details |
| US2874300A | Device for x-ray examination | Expired / Lapsed | 1954-07-12 | 1959-02-17 | 0 | Details |
| US2874370A | Device for recording and re-transmitting coded information | Expired / Lapsed | 1954-04-19 | 1959-02-17 | 0 | Details |
| US2874232A | Transistor element and transistor circuit | Expired / Lapsed | 1954-02-01 | 1959-02-17 | 0 | Details |
| US2870310A | Indicator circuit arrangement | Expired / Lapsed | 1955-12-12 | 1959-01-20 | 0 | Details |
| US2870345A | Amplification control of a transistor | Expired / Lapsed | 1955-01-03 | 1959-01-20 | 0 | Details |
| US2868683A | Semi-conductive device | Expired / Lapsed | 1955-07-01 | 1959-01-13 | 2 | Details |
| US2865794A | Semi-conductor device with telluride containing ohmic conta… | Expired / Lapsed | 1955-12-01 | 1958-12-23 | 1 | Details |
| US2865793A | Method of making electrical connection to semi-conductive s… | Expired / Lapsed | 1955-11-29 | 1958-12-23 | 2 | Details |
| US2862934A | Method of producing tachysterol and dihydrotachysterol | Expired / Lapsed | 1956-02-10 | 1958-12-02 | 2 | Details |
| US2860694A | Burner for liquid hydrocarbons | Expired / Lapsed | 1952-09-25 | 1958-11-18 | 0 | Details |
| US2859562A | Metal glass seals and methods of making same | Expired / Lapsed | 1955-10-12 | 1958-11-11 | 0 | Details |
| US2854615A | Circuit arrangement for providing a d. c. output | Expired / Lapsed | 1956-01-16 | 1958-09-30 | 0 | Details |
| US2854614A | Transistor circuit arrangement having stabilized output vol… | Expired / Lapsed | 1955-10-10 | 1958-09-30 | 0 | Details |
| US2854579A | Frequency-division circuit-arrangement | Expired / Lapsed | 1955-07-22 | 1958-09-30 | 0 | Details |
| US2854364A | Sublimation process for manufacturing silicon carbide cryst… | Expired / Lapsed | 1955-03-07 | 1958-09-30 | 1 | Details |
| US2854531A | Direct-voltage amplifier | Expired / Lapsed | 1954-07-29 | 1958-09-30 | 0 | Details |
| US2851591A | Selective calling wireless transmission system | Expired / Lapsed | 1953-02-09 | 1958-09-09 | 0 | Details |
| US2849664A | Semi-conductor diode | Expired / Lapsed | 1955-10-17 | 1958-08-26 | 2 | Details |
| US2847523A | Switch arrangement | Expired / Lapsed | 1956-09-24 | 1958-08-12 | 0 | Details |
| US2846581A | Transistor pulse generator circuit | Expired / Lapsed | 1956-07-17 | 1958-08-05 | 0 | Details |
| US2846580A | Oscillator circuit arrangement | Expired / Lapsed | 1955-06-08 | 1958-08-05 | 0 | Details |
| US2846646A | Measuring or recording device | Expired / Lapsed | 1954-06-07 | 1958-08-05 | 0 | Details |
| US2843669A | Synchronized generator | Expired / Lapsed | 1954-10-26 | 1958-07-15 | 0 | Details |
| US2843804A | Device for supplying lighting panels | Expired / Lapsed | 1954-01-29 | 1958-07-15 | 0 | Details |
| US2838664A | Transistor counter circuit | Expired / Lapsed | 1954-07-14 | 1958-06-10 | 0 | Details |
| US2838617A | Circuit-arrangement comprising a four-zone transistor | Expired / Lapsed | 1953-12-22 | 1958-06-10 | 0 | Details |
| US2837483A | Method of making a permanent magnet | Expired / Lapsed | 1955-04-18 | 1958-06-03 | 2 | Details |
| US2835805A | Circuit arrangement for decoding pulse code modulation acco… | Expired / Lapsed | 1953-12-14 | 1958-05-20 | 0 | Details |
| US2831114A | Transistor amplifier with bias stabilization | Expired / Lapsed | 1955-10-27 | 1958-04-15 | 0 | Details |
| US2831127A | Trigger control-circuit arrangement | Expired / Lapsed | 1955-04-05 | 1958-04-15 | 0 | Details |
| US2829281A | Transistor switching circuit | Expired / Lapsed | 1955-09-08 | 1958-04-01 | 0 | Details |
| US2829315A | Device comprising electric light source fed by pulses | Expired / Lapsed | 1955-03-28 | 1958-04-01 | 0 | Details |
| US2829231A | Device for automatic control of the temperature of an elect… | Expired / Lapsed | 1955-02-08 | 1958-04-01 | 0 | Details |
| US2827599A | Transistor | Expired / Lapsed | 1954-04-19 | 1958-03-18 | 2 | Details |
| US2827437A | Method of making a permanent magnet | Expired / Lapsed | 1952-10-01 | 1958-03-18 | 2 | Details |
| US2825891A | Magnetic memory device | Expired / Lapsed | 1954-08-24 | 1958-03-04 | 0 | Details |
| US2825014A | Semi-conductor device | Expired / Lapsed | 1954-10-19 | 1958-02-25 | 0 | Details |
| US2822310A | Semi-conductor device | Expired / Lapsed | 1956-04-23 | 1958-02-04 | 2 | Details |
| US2822533A | Device for reading magnetically recorded memory elements | Expired / Lapsed | 1954-07-08 | 1958-02-04 | 0 | Details |
| US2820144A | Stabilized feedback oscillator | Expired / Lapsed | 1954-11-18 | 1958-01-14 | 0 | Details |
| US2820178A | Switching arrangement for switchingoff the ignition protect… | Expired / Lapsed | 1954-07-29 | 1958-01-14 | 0 | Details |
| US2820108A | Hybrid system for use in radio-telephone links comprising a… | Expired / Lapsed | 1954-06-07 | 1958-01-14 | 0 | Details |
| US2814746A | Electric motor | Expired / Lapsed | 1954-08-12 | 1957-11-26 | 0 | Details |
| US2809132A | Method of coating a support with a lead sulphide layer | Expired / Lapsed | 1956-04-25 | 1957-10-08 | 1 | Details |
| US2805334A | Frequency discriminator circuit arrangement for ultra high-… | Expired / Lapsed | 1953-11-27 | 1957-09-03 | 0 | Details |
| US2803765A | Anisotropic permanent magnetic cylindrical member | Expired / Lapsed | 1954-11-15 | 1957-08-20 | 0 | Details |
| US2801298A | Series connected transistor amplifier | Expired / Lapsed | 1954-07-20 | 1957-07-30 | 0 | Details |
| US2794918A | Automatic frequency control | Expired / Lapsed | 1953-05-07 | 1957-06-04 | 0 | Details |
| US2791739A | Circuit arrangement for converting a lower d. c. voltage in… | Expired / Lapsed | 1955-05-20 | 1957-05-07 | 0 | Details |
| US2791697A | Particle counting apparatus | Expired / Lapsed | 1954-03-23 | 1957-05-07 | 0 | Details |
| US2791377A | Apparatus for counting particles | Expired / Lapsed | 1952-06-25 | 1957-05-07 | 0 | Details |
| US2791695A | Electrical counting apparatus | Expired / Lapsed | 1952-03-06 | 1957-05-07 | 0 | Details |
| US2790161A | Tuning indicator | Expired / Lapsed | 1954-03-23 | 1957-04-23 | 0 | Details |
| US2727968A | Electric hygroscope | Expired / Lapsed | 1953-01-29 | 1955-12-20 | 2 | Details |
| US2700000A | Thermionic cathode and method of manufacturing same | Expired / Lapsed | 1952-02-27 | 1955-01-18 | 2 | Details |
| US2698913A | Cathode structure | Expired / Lapsed | 1951-11-29 | 1955-01-04 | 0 | Details |
| US2692173A | Two-way tiltable x-ray table | Expired / Lapsed | 1952-05-17 | 1954-10-19 | 0 | Details |
| US2411298A | Piezoelectric crystal | Expired / Lapsed | 1945-02-12 | 1946-11-19 | 0 | Details |
| US2363057A | Electrical measuring device | Expired / Lapsed | 1943-05-11 | 1944-11-21 | 0 | Details |