Assignee
AT & T BELL LAB
US·3,205 granted patents·184,480 citations·filing 1979–1994
Top patents by PatentIndex Score
3,205 records- 0199US5323404AOptical fiber laser or amplifier including high reflectivity gratingsAT & T BELL LAB·Filed 1993·Granted Jun 21, 1994·332 cites·21 claims
- 0299US5225922AOptical transmission system equalizerAT & T BELL LAB·Filed 1991·Granted Jul 6, 1993·275 cites·14 claims
- 0399US5208816AGeneralized viterbi decoding algorithmsAT & T BELL LAB·Filed 1992·Granted May 4, 1993·414 cites·23 claims
- 0499US5194765ADigitally controlled element sizingAT & T BELL LAB·Filed 1991·Granted Mar 16, 1993·282 cites·7 claims
- 0599US5136671AOptical switch, multiplexer, and demultiplexerAT & T BELL LAB·Filed 1991·Granted Aug 4, 1992·403 cites·8 claims
- 0699US5050949AMulti-stage optical fiber amplifierAT & T BELL LAB·Filed 1990·Granted Sep 24, 1991·206 cites·8 claims
- 0799US5012245AIntegral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audioAT & T BELL LAB·Filed 1989·Granted Apr 30, 1991·150 cites·9 claims
- 0899US4639914AWireless PBX/LAN system with optimum combiningAT & T BELL LAB·Filed 1984·Granted Jan 27, 1987·324 cites·9 claims
- 0999US4555775ADynamic generation and overlaying of graphic windows for multiple active program storage areasAT & T BELL LAB·Filed 1982·Granted Nov 26, 1985·590 cites·15 claims
- 1099US4526043AConformable tactile sensorAT & T BELL LAB·Filed 1983·Granted Jul 2, 1985·285 cites·5 claims
- 1199US4495619ATransmitter and receivers using resource sharing and coding for increased capacityAT & T BELL LAB·Filed 1984·Granted Jan 22, 1985·432 cites·7 claims
- 1299US4491945AFast packet switchAT & T BELL LAB·Filed 1982·Granted Jan 1, 1985·292 cites·57 claims
- 1399US4482899AWide bandwidth hybrid mode feedsAT & T BELL LAB·Filed 1983·Granted Nov 13, 1984·232 cites·3 claims
- 1499US4474830AMultiple coating of fibersAT & T BELL LAB·Filed 1982·Granted Oct 2, 1984·183 cites·14 claims
- 1598US5329589AMediation of transactions by a communications systemAT & T BELL LAB·Filed 1993·Granted Jul 12, 1994·1k cites·28 claims
- 1698US5303138ALow loss synchronous rectifier for application to clamped-mode power convertersAT & T BELL LAB·Filed 1993·Granted Apr 12, 1994·168 cites·10 claims
- 1798US5285513AOptical fiber cable provided with stabilized waterblocking materialAT & T BELL LAB·Filed 1992·Granted Feb 8, 1994·538 cites·12 claims
- 1898US5283500AFlat panel field emission display apparatusAT & T BELL LAB·Filed 1992·Granted Feb 1, 1994·177 cites·23 claims
- 1998US5212752AOptical fiber ferrule connector having enhanced provisions for tuningAT & T BELL LAB·Filed 1992·Granted May 18, 1993·530 cites·25 claims
- 2098US5172213AMolded circuit package having heat dissipating postAT & T BELL LAB·Filed 1991·Granted Dec 15, 1992·356 cites·13 claims
- 2198US5129030AMovable lightguide connector panelAT & T BELL LAB·Filed 1991·Granted Jul 7, 1992·434 cites·7 claims
- 2298US5105305ANear-field scanning optical microscope using a fluorescent probeAT & T BELL LAB·Filed 1991·Granted Apr 14, 1992·370 cites·11 claims
- 2398US5040217APerceptual coding of audio signalsAT & T BELL LAB·Filed 1989·Granted Aug 13, 1991·240 cites·16 claims
- 2498US5002350AOptical multiplexer/demultiplexerAT & T BELL LAB·Filed 1990·Granted Mar 26, 1991·270 cites·16 claims
- 2598US5000771AMethod for manufacturing an article comprising a refractory dielectric bodyAT & T BELL LAB·Filed 1989·Granted Mar 19, 1991·77 cites·13 claims
- 2698US4999705AThree dimensional motion compensated video codingAT & T BELL LAB·Filed 1990·Granted Mar 12, 1991·304 cites·21 claims
- 2798US4952524ASemiconductor device manufacture including trench formationAT & T BELL LAB·Filed 1989·Granted Aug 28, 1990·345 cites·13 claims
- 2898US4644101APressure-responsive position sensorAT & T BELL LAB·Filed 1985·Granted Feb 17, 1987·184 cites·15 claims
- 2998US4626066AOptical coupling device utilizing a mirror and cantilevered armAT & T BELL LAB·Filed 1983·Granted Dec 2, 1986·141 cites·7 claims
- 3098US4594380AElastomeric controlled release formulation and article comprising sameAT & T BELL LAB·Filed 1985·Granted Jun 10, 1986·214 cites·17 claims
- 3198US4587670AHidden Markov model speech recognition arrangementAT & T BELL LAB·Filed 1982·Granted May 6, 1986·270 cites·15 claims
- 3298US4583228AFrequency stabilization of lasersAT & T BELL LAB·Filed 1983·Granted Apr 15, 1986·97 cites·10 claims
- 3398US4534024ASystem and method for controlling a multiple access data communications system including both data packets and voice packets being communicated over a cable television systemAT & T BELL LAB·Filed 1982·Granted Aug 6, 1985·240 cites·20 claims
- 3498US4525687AHigh speed light modulator using multiple quantum well structuresAT & T BELL LAB·Filed 1983·Granted Jun 25, 1985·128 cites·25 claims
- 3598US4518926AGate-coupled field-effect transistor pair amplifierAT & T BELL LAB·Filed 1982·Granted May 21, 1985·126 cites·6 claims
- 3698US4516130AAntenna arrangements using focal plane filtering for reducing sidelobesAT & T BELL LAB·Filed 1982·Granted May 7, 1985·162 cites·3 claims
- 3798US4512013ASimultaneous transmission of speech and data over an analog channelAT & T BELL LAB·Filed 1983·Granted Apr 16, 1985·219 cites·5 claims
- 3898US4509019ATunable active filterAT & T BELL LAB·Filed 1983·Granted Apr 2, 1985·108 cites·7 claims
- 3998US4494230AFast packet switching systemAT & T BELL LAB·Filed 1982·Granted Jan 15, 1985·228 cites·46 claims
- 4098US4484179ATouch position sensitive surfaceAT & T BELL LAB·Filed 1981·Granted Nov 20, 1984·391 cites·30 claims
- 4198US4471164AStream cipher operation using public key cryptosystemAT & T BELL LAB·Filed 1981·Granted Sep 11, 1984·172 cites·13 claims
- 4298US4469564ACopper electroplating processAT & T BELL LAB·Filed 1982·Granted Sep 4, 1984·160 cites·26 claims
- 4397US5361276AAll digital maximum likelihood based spread spectrum receiverAT & T BELL LAB·Filed 1993·Granted Nov 1, 1994·229 cites·10 claims
- 4497US5349743AMethod of making a multilayer monolithic magnet componentAT & T BELL LAB·Filed 1991·Granted Sep 27, 1994·125 cites·39 claims
- 4597US5345445AEstablishing telecommunications calls in a broadband networkAT & T BELL LAB·Filed 1992·Granted Sep 6, 1994·363 cites·14 claims
- 4697US5345446AEstablishing telecommunications call paths in broadband communication networksAT & T BELL LAB·Filed 1992·Granted Sep 6, 1994·382 cites·40 claims
- 4797US5343240ABidirectional video telephony using shared channels on coaxial cable networksAT & T BELL LAB·Filed 1991·Granted Aug 30, 1994·259 cites·44 claims
- 4897US5339346ADevice fabrication entailing plasma-derived x-ray delineationAT & T BELL LAB·Filed 1993·Granted Aug 16, 1994·155 cites·17 claims
- 4997US5337398ASingle in-line optical packageAT & T BELL LAB·Filed 1992·Granted Aug 9, 1994·204 cites·13 claims
- 5097US5337353ACapacitive proximity sensorsAT & T BELL LAB·Filed 1992·Granted Aug 9, 1994·134 cites·8 claims
Showing the top 50 of 3,205 patent records by PatentIndex Score.
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