Assignee
COHERENT COMMUNICAT SYST
US·15 granted patents·695 citations·filing 1970–1997
Top patents by PatentIndex Score
15 records- 0185US5216704AMethod for remote power fail detection and maintaining continuous operation for data and voice devices operating over local loopsCOHERENT COMMUNICAT SYST·Filed 1991·Granted Jun 1, 1993·127 cites·10 claims
- 0281US5561668AEcho canceler with subband attenuation and noise injection controlCOHERENT COMMUNICAT SYST·Filed 1995·Granted Oct 1, 1996·69 cites·6 claims
- 0379US5283784AEcho canceller processing techniques and processingCOHERENT COMMUNICAT SYST·Filed 1992·Granted Feb 1, 1994·59 cites·25 claims
- 0475US5793753ATelecommunications network management observation and response systemCOHERENT COMMUNICAT SYST·Filed 1996·Granted Aug 11, 1998·120 cites·4 claims
- 0573US5157653AResidual echo elimination with proportionate noise injectionCOHERENT COMMUNICAT SYST·Filed 1990·Granted Oct 20, 1992·47 cites·25 claims
- 0672US5896461ACompact speakerphone apparatusCOHERENT COMMUNICAT SYST·Filed 1995·Granted Apr 20, 1999·61 cites·26 claims
- 0772US4929849ANoise suppression in recovery of clock from NRZ dataCOHERENT COMMUNICAT SYST·Filed 1988·Granted May 29, 1990·18 cites·11 claims
- 0864US5721730ASpectral noise compensation for telecommunication signal processingCOHERENT COMMUNICAT SYST·Filed 1996·Granted Feb 24, 1998·38 cites·7 claims
- 0962US5249225ASelf-balancing hybrid using digitally programmable attenuator for variable impedance elementsCOHERENT COMMUNICAT SYST·Filed 1991·Granted Sep 28, 1993·41 cites·17 claims
- 1054US5884255ASpeech detection system employing multiple determinantsCOHERENT COMMUNICAT SYST·Filed 1996·Granted Mar 16, 1999·46 cites·25 claims
- 1149US5857167ACombined speech coder and echo cancelerCOHERENT COMMUNICAT SYST·Filed 1997·Granted Jan 5, 1999·31 cites·4 claims
- 1241US5631958AAutomatic echo cancellation for an integrated services digital network interfaceCOHERENT COMMUNICAT SYST·Filed 1994·Granted May 20, 1997·9 cites·22 claims
- 1340US5550901AFull-duplex adapter for PBX telephone systemCOHERENT COMMUNICAT SYST·Filed 1994·Granted Aug 27, 1996·11 cites·33 claims
- 1438US5784361ABi-directional asynchronous telecommunication audio signal processingCOHERENT COMMUNICAT SYST·Filed 1997·Granted Jul 21, 1998·11 cites·17 claims
- 1535US3932704ACoherent digital frequency shift keying systemCOHERENT COMMUNICAT SYST·Filed 1970·Granted Jan 13, 1976·7 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →