Inventor · disambiguated record
Walter T. Hartwell
Also filed as: HARTWELL WALTER T
7 granted patents·419 citations·filing 1977–1987
89Inventor score
Top patents by PatentIndex Score
7 records- 0186US4221933AData storage and retrieval structure for a message storage systemCORNELL RONALD G·Filed 1978·Granted Sep 9, 1980·51 cites·12 claims
- 0284US4914692AAutomatic speech recognition using echo cancellationAT & T BELL LAB·Filed 1987·Granted Apr 3, 1990·79 cites·5 claims
- 0383US4771465ADigital speech sinusoidal vocoder with transmission of only subset of harmonicsAMERICAN TELEPHONE & TELEGRAPH·Filed 1986·Granted Sep 13, 1988·103 cites·24 claims
- 0481US4797926ADigital speech vocoderAMERICAN TELEPHONE & TELEGRAPH·Filed 1986·Granted Jan 10, 1989·92 cites·30 claims
- 0561US4912764ADigital speech coder with different excitation typesAMERICAN TELEPHONE & TELEGRAPH·Filed 1985·Granted Mar 27, 1990·37 cites·10 claims
- 0656US4719923ANon-invasive blood flow measurements utilizing autoregressive analysis with averaged reflection coefficientsAMERICAN TELEPHONE & TELEGRAPH·Filed 1985·Granted Jan 19, 1988·55 cites·17 claims
- 0727US4164041AMemory organization to distribute power dissipation and to allow single circuit pack memory growthBELL TELEPHONE LABOR INC·Filed 1977·Granted Aug 7, 1979·2 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →