Inventor · disambiguated record
Richard Harry Ketchum
Also filed as: KETCHUM RICHARD · KETCHUM RICHARD H · KETCHUM RICHARD HARRY
9 granted patents·346 citations·filing 1986–2010
91Inventor score
Top patents by PatentIndex Score
9 records- 0183US4771465ADigital speech sinusoidal vocoder with transmission of only subset of harmonicsAMERICAN TELEPHONE & TELEGRAPH·Filed 1986·Granted Sep 13, 1988·103 cites·24 claims
- 0278US6757384B1Robust double-talk detection and recovery in a system for echo cancelationLUCENT TECHNOLOGIES INC·Filed 2000·Granted Jun 29, 2004·26 cites·11 claims
- 0378US6606595B1HMM-based echo model for noise cancellation avoiding the problem of false triggersLUCENT TECHNOLOGIES INC·Filed 2000·Granted Aug 12, 2003·31 cites·2 claims
- 0476US4899385ACode excited linear predictive vocoderAMERICAN TELEPHONE & TELEGRAPH·Filed 1987·Granted Feb 6, 1990·71 cites·18 claims
- 0565US6744885B1ASR talkoff suppressorLUCENT TECHNOLOGIES INC·Filed 2000·Granted Jun 1, 2004·13 cites·27 claims
- 0662US4910781ACode excited linear predictive vocoder using virtual searchingAT & T BELL LAB·Filed 1987·Granted Mar 20, 1990·40 cites·18 claims
- 0757US5313554ABackward gain adaptation method in code excited linear prediction codersAT & T BELL LAB·Filed 1992·Granted May 17, 1994·37 cites·11 claims
- 0856US8640375B21911 handgun disassembly tool and method of making sameKETCHUM RICHARD·Filed 2010·Granted Feb 4, 2014·7 cites·7 claims
- 0953US5765125ADetection of tones while minimizing incorrect identification of other sounds as tonesLUCENT TECHNOLOGIES INC·Filed 1997·Granted Jun 9, 1998·18 cites·33 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →