Inventor · disambiguated record
Donald R. Nielsen
Also filed as: NIELSEN DONALD R · PETTIT ROWLAND
12 granted patents·91 citations·filing 1974–1993
90Inventor score
Top patents by PatentIndex Score
12 records- 0186US4571255ASubsituted phenoxybenzisoxazole herbicidesPPG INDUSTRIES INC·Filed 1983·Granted Feb 18, 1986·20 cites·4 claims
- 0285US4738709AHerbicidally active substituted benzisoxazolesPPG INDUSTRIES INC·Filed 1985·Granted Apr 19, 1988·24 cites·5 claims
- 0384US4140866APreparation of sulfate free glycolic acid esterPPG INDUSTRIES INC·Filed 1978·Granted Feb 20, 1979·17 cites·12 claims
- 0456US4790868AHerbicidally active substituted phenoxy or phenylthio benzoxazolone (or benzthiazolone) compoundsPPG INDUSTRIES INC·Filed 1987·Granted Dec 13, 1988·5 cites·3 claims
- 0551US5428003AAryloxy benzotriazole herbicidal agents and methods for the preparation thereofAMERICAN CYANAMID CO·Filed 1993·Granted Jun 27, 1995·3 cites·14 claims
- 0651US4195190APreparation of ethylene glycolPPG INDUSTRIES INC·Filed 1978·Granted Mar 25, 1980·3 cites·4 claims
- 0749US4141930AHydrogenation of glycolic acidPPG INDUSTRIES INC·Filed 1978·Granted Feb 27, 1979·8 cites·3 claims
- 0845US3991104ATrisulfosuccinic acidPPG INDUSTRIES INC·Filed 1974·Granted Nov 9, 1976·2 cites·3 claims
- 0944US5324711AAryloxy benzotriazole herbicidal agents and methods for the preparation thereofAMERICAN CYANAMID CO·Filed 1989·Granted Jun 28, 1994·3 cites·24 claims
- 1039US4746351AHerbicidally active substituted phenoxy benzoxazole (or benzothiazole)PPG INDUSTRIES INC·Filed 1986·Granted May 24, 1988·1 cites·4 claims
- 1138US4203870ACatalyst for hydrogenation of glycolic acidPPG INDUSTRIES INC·Filed 1978·Granted May 20, 1980·4 cites·3 claims
- 1229US4056491ADetergent compositions of trisulfosuccinic acidPPG INDUSTRIES INC·Filed 1976·Granted Nov 1, 1977·1 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Donald R. Nielsen files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →