Inventor · disambiguated record
Donald J. Sykes
Also filed as: PRATT LOUIS D · SYKES DONALD J
11 granted patents·193 citations·filing 1976–1994
91Inventor score
Top patents by PatentIndex Score
11 records- 0190USD292372SContainer for tablets or the likeMARPAC IND INC·Filed 1985·Granted Oct 20, 1987·38 cites·1 claims
- 0290US4311551AComposition and method for etching copper substratesHUNT CHEM CORP PHILIP A·Filed 1980·Granted Jan 19, 1982·52 cites·28 claims
- 0372USD376760SBottleMARPAC IND INC·Filed 1994·Granted Dec 24, 1996·16 cites·1 claims
- 0457USD345303SBottleMARPAC IND INC·Filed 1992·Granted Mar 22, 1994·9 cites·1 claims
- 0548US4485933AClosure for receptacles containing a pressurized gasMARPAC IND INC·Filed 1983·Granted Dec 4, 1984·18 cites·4 claims
- 0646USD316039SCombined closure and container for a drying agentMARPAC IND INC·Filed 1988·Granted Apr 9, 1991·5 cites·1 claims
- 0744US4723694AFluid dispensing valve mechanism and assemblyMARPAC IND INC·Filed 1986·Granted Feb 9, 1988·19 cites·9 claims
- 0844US4555023ADrum containersMARPAC IND INC·Filed 1985·Granted Nov 26, 1985·18 cites·10 claims
- 0941US4678617AMethod for converting an expended thermoplastic article into a useful articleMARPAC IND INC·Filed 1985·Granted Jul 7, 1987·10 cites·10 claims
- 1037US4574985ADispensing valve including an elastomeric seal disposed between plastic plug and valve seat membersMARPAC IND INC·Filed 1984·Granted Mar 11, 1986·6 cites·10 claims
- 1136US4191575ATwo-step photographic processing of black and white images which enhances the images by controlled bleaching during fixing immediately following development and which produces black and white images with reduced density in low density areasHUNT PHILIP CHEMICAL CORP·Filed 1976·Granted Mar 4, 1980·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →