Inventor · disambiguated record
Derek J. Parkyn
Also filed as: PARKYN DEREK J · PARKYN DEREK JOHN
5 granted patents·72 citations·filing 1975–1984
78Inventor score
Top patents by PatentIndex Score
5 records- 0186US4675725AImage superimposing systemCROSFIELD ELECTRONICS LTD·Filed 1984·Granted Jun 23, 1987·54 cites·6 claims
- 0245US4070585AStarter motor lockout systemPHILIPS CORP·Filed 1975·Granted Jan 24, 1978·10 cites·9 claims
- 0335US4032792AAutomotive starter lockout systemPHILIPS CORP·Filed 1975·Granted Jun 28, 1977·5 cites·11 claims
- 0428US4370747AData transmissionPHILIPS CORP·Filed 1980·Granted Jan 25, 1983·2 cites·8 claims
- 0527US4085342AHigh voltage A.C. to low voltage D.C. switching interface circuitPHILIPS CORP·Filed 1976·Granted Apr 18, 1978·1 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →