Inventor · disambiguated record
Duane H. Cooper
Also filed as: COOPER DUANE · COOPER DUANE H
13 granted patents·1 pending application·511 citations·filing 1974–2001
94Inventor score
Top patents by PatentIndex Score
14 records- 0192US5333200AHead diffraction compensated stereo system with loud speaker arrayCOOPER DUANE H·Filed 1992·Granted Jul 26, 1994·112 cites·50 claims
- 0291US4910779AHead diffraction compensated stereo system with optimal equalizationCOOPER DUANE H·Filed 1988·Granted Mar 20, 1990·82 cites·14 claims
- 0391US4236039ASignal matrixing for directional reproduction of soundNAT RES DEV·Filed 1976·Granted Nov 25, 1980·53 cites·4 claims
- 0486US4975954AHead diffraction compensated stereo system with optimal equalizationCOOPER DUANE H·Filed 1989·Granted Dec 4, 1990·59 cites·11 claims
- 0586US4893342AHead diffraction compensated stereo systemCOOPER DUANE H·Filed 1987·Granted Jan 9, 1990·49 cites·20 claims
- 0681US5136651AHead diffraction compensated stereo systemCOOPER DUANE H·Filed 1991·Granted Aug 4, 1992·59 cites·10 claims
- 0779US5034983AHead diffraction compensated stereo systemCOOPER DUANE H·Filed 1989·Granted Jul 23, 1991·36 cites·59 claims
- 0875US4149031AMultichannel matrix logic and encoding systemsCOOPER DUANE H·Filed 1977·Granted Apr 10, 1979·22 cites·2 claims
- 0960US3946165AMethod and apparatus for control of crosstalk in multiple frequency recordingCOOPER DUANE H·Filed 1974·Granted Mar 23, 1976·9 cites·13 claims
- 1054US4085291ASynthetic supplementary channel matrix decoding systemsCOOPER DUANE H·Filed 1976·Granted Apr 18, 1978·10 cites·14 claims
- 1154US3970788AMonaural and stereo compatible multidirectional sound matrixingCOOPER DUANE H·Filed 1975·Granted Jul 20, 1976·10 cites·7 claims
- 1245US2002032623A1Method and apparatus for mail managementFiled 2001·Application pending·0 cites
- 1344US3989903AMulti-directional sound signal recording and/or reproducing system with crosstalk compensation meansCOOPER DUANE H·Filed 1974·Granted Nov 2, 1976·6 cites·11 claims
- 1439US3985978AMethod and apparatus for control of FM beat distortionCOOPER DUANE H·Filed 1974·Granted Oct 12, 1976·4 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →