Inventor · disambiguated record
William J. Birkmeyer
Also filed as: BIRKMEYER WILLIAM J · LEWARCHIK RONALD J
15 granted patents·399 citations·filing 1977–1994
94Inventor score
Files withPPG INDUSTRIES INC15
Top patents by PatentIndex Score
15 records- 0194US4517322AAcrylated alkyd and polyester resinsPPG INDUSTRIES INC·Filed 1983·Granted May 14, 1985·82 cites·12 claims
- 0293US5468802ALow volatile organic content automotive refinish coating compositionPPG INDUSTRIES INC·Filed 1994·Granted Nov 21, 1995·81 cites·22 claims
- 0391US4314918ACoating compositions containing organic alcoholic reactive diluentsPPG INDUSTRIES INC·Filed 1980·Granted Feb 9, 1982·59 cites·15 claims
- 0485US4252935AEsters of diglycidyl polyethers of hydrogenated phenols and coating compositions containing samePPG INDUSTRIES INC·Filed 1979·Granted Feb 24, 1981·30 cites·17 claims
- 0580US4283428ABeverage containers coated with a water-based linerPPG INDUSTRIES INC·Filed 1977·Granted Aug 11, 1981·25 cites·10 claims
- 0676US4356277AReaction products of a polyglycidyl ether of a polyphenol and an amino acid and aqueous solubilized products therefromPPG INDUSTRIES INC·Filed 1978·Granted Oct 26, 1982·24 cites·13 claims
- 0776US4123422AAmide modified saturated polyester polyols and method of makingPPG INDUSTRIES INC·Filed 1977·Granted Oct 31, 1978·21 cites·20 claims
- 0873US4690980AAcrylic modified polymersPPG INDUSTRIES INC·Filed 1986·Granted Sep 1, 1987·20 cites·19 claims
- 0967US4775597AUltraviolet light curable compositions for application to porous substrates based on unsaturated polyesters reacted with amino alcoholsPPG INDUSTRIES INC·Filed 1987·Granted Oct 4, 1988·20 cites·13 claims
- 1064US4174337AHydroxy-functional esters of substituted imidazolidinediones and compositions containing samePPG INDUSTRIES INC·Filed 1978·Granted Nov 13, 1979·4 cites·34 claims
- 1160US4299747AReaction products of a polyglycidyl ether of a polyphenol and an amino acid and aqueous solubilized products therefromPPG INDUSTRIES INC·Filed 1977·Granted Nov 10, 1981·11 cites·19 claims
- 1260US4206104AN,N-'-Dihydroxyalkyl ester substituted imidazolidinediones and coating compositions containing samePPG INDUSTRIES INC·Filed 1978·Granted Jun 3, 1980·13 cites·33 claims
- 1345US4221891AEsters of imidazolidinedione-based triepoxides and coating compositions containing samePPG INDUSTRIES INC·Filed 1979·Granted Sep 9, 1980·5 cites·13 claims
- 1441US4228294AEsters of imidazolidinedione-based diepoxides and coating compositions containing samePPG INDUSTRIES INC·Filed 1978·Granted Oct 14, 1980·3 cites·27 claims
- 1533US4187380AEsters of imidazolidinedione-based triepoxidesPPG INDUSTRIES INC·Filed 1978·Granted Feb 5, 1980·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →