Inventor · disambiguated record
Chao S. Chi
Also filed as: CHI CHAO S
12 granted patents·274 citations·filing 1975–1991
92Inventor score
Top patents by PatentIndex Score
12 records- 0194US4317148ATransducer for perpendicular magnetic recordingSPERRY CORP·Filed 1980·Granted Feb 23, 1982·55 cites·33 claims
- 0293US4802033APredictive positioning offset compensation for high TPI disk systemsEASTMAN KODAK CO·Filed 1986·Granted Jan 31, 1989·59 cites·3 claims
- 0384US5121258AApparatus for anhysteretic duplication of a flexible magnetic diskEASTMAN KODAK CO·Filed 1991·Granted Jun 9, 1992·37 cites·8 claims
- 0483US4423451AThin film magnetic head having disparate poles for pulse asymmetry compensationSPERRY CORP·Filed 1981·Granted Dec 27, 1983·26 cites·8 claims
- 0580US4479152AAdjustable equalizerSPERRY CORP·Filed 1982·Granted Oct 23, 1984·22 cites·12 claims
- 0680US3955102AZero crossing detecting circuitDIGITAL EQUIPMENT CORP·Filed 1975·Granted May 4, 1976·18 cites·5 claims
- 0774US5075801AElectromagnetic drive circuitry for anhysteretic duplication of a flexible magnetic diskEASTMAN KODAK CO·Filed 1991·Granted Dec 24, 1991·23 cites·2 claims
- 0854US4954825ASelf clocking binary data encoding/decoding methodEASTMAN KODAK CO·Filed 1989·Granted Sep 4, 1990·13 cites·14 claims
- 0954US4544961ATriplex digital magnetic recording and reproducing systemSPERRY CORP·Filed 1983·Granted Oct 1, 1985·8 cites·17 claims
- 1046US3982194APhase lock loop with delay circuits for relative digital decoding over a range of frequenciesDIGITAL EQUIPMENT CORP·Filed 1975·Granted Sep 21, 1976·9 cites·10 claims
- 1137US4470081AControlled return to A.C. digital magnetic and reproducing systemSPERRY CORP·Filed 1982·Granted Sep 4, 1984·3 cites·11 claims
- 1230US4410817APrecision time duration detectorSPERRY CORP·Filed 1982·Granted Oct 18, 1983·1 cites·4 claims
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