Inventor · disambiguated record
David A. Hutchison
Also filed as: HUTCHISON DAVID A
12 granted patents·9 pending applications·155 citations·filing 1980–2010
91Inventor score
Top patents by PatentIndex Score
21 records- 0194US7863228B2Additives for lubricants and fuelsAFTON CHEMICAL CORP·Filed 2008·Granted Jan 4, 2011·20 cites·28 claims
- 0284US7361629B2Additives for lubricants and fuelsAFTON CHEMICAL CORP·Filed 2004·Granted Apr 22, 2008·22 cites·6 claims
- 0383US4948523AChlorine-free silver protective lubricant composition (I)AMOCO CORP·Filed 1987·Granted Aug 14, 1990·40 cites·33 claims
- 0478US8623105B2Fuel additives to maintain optimum injector performanceMALFER DENNIS J·Filed 2008·Granted Jan 7, 2014·4 cites·30 claims
- 0576US5174915AMedium speed diesel engine lubricating oilsETHYL PETROLEUM ADDITIVES INC·Filed 1991·Granted Dec 29, 1992·29 cites·1 claims
- 0676US4871465AChlorine-free silver protective lubricant composition (II)AMOCO CORP·Filed 1987·Granted Oct 3, 1989·27 cites·18 claims
- 0772US8377856B2Extended drain diesel lubricant formulationsAFTON CHEMICAL CORP·Filed 2010·Granted Feb 19, 2013·1 cites·11 claims
- 0855US2010037514A1Fuel additives to maintain optimum injector performanceAFTON CHEMICAL CORP·Filed 2008·Application pending·0 cites
- 0954US2010292112A1Extended drain diesel lubricant formulationsAFTON CHEMICAL CORP·Filed 2009·Application pending·0 cites
- 1053US2008139426A1Lubricating compositionAFTON CHEMICAL CORP·Filed 2007·Application pending·0 cites
- 1151US7833954B2Lubricating compositionAFTON CHEMICAL CORP·Filed 2008·Granted Nov 16, 2010·0 cites·24 claims
- 1249US2008139425A1Lubricating compositionHUTCHISON DAVID A·Filed 2006·Application pending·0 cites
- 1349US2008139427A1Lubricating compositionHUTCHISON DAVID A·Filed 2007·Application pending·0 cites
- 1448US2008139422A1Lubricating CompositionLOPER JOHN T·Filed 2006·Application pending·0 cites
- 1548US2008139421A1Lubricating CompositionLOPER JOHN T·Filed 2006·Application pending·0 cites
- 1647USD314576SCombined base and cover for an antennaORION INDUSTRIES·Filed 1987·Granted Feb 12, 1991·5 cites·1 claims
- 1744US2008287328A1Lubricating compositionLOPER JOHN T·Filed 2007·Application pending·0 cites
- 1842US2008139428A1Lubricating compositionHUTCHISON DAVID A·Filed 2006·Application pending·0 cites
- 1936US4427563AStabilization of hydrocracked oils with certain dihydroxy diphenyl oxidation stabilizersATLANTIC RICHFIELD CO·Filed 1980·Granted Jan 24, 1984·2 cites·19 claims
- 2035USD320604SCover for an antenna baseORION INDUSTRIES·Filed 1990·Granted Oct 8, 1991·2 cites·1 claims
- 2134US4498998AStabilization of hydrocracked oils against UV-light degradation with certain dihydroxy componentsATLANTIC RICHFIELD CO·Filed 1982·Granted Feb 12, 1985·3 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →