Inventor
FIELDS JR DONALD L
US29 patents
⚠️ This page may combine multiple inventors who share the name “FIELDS JR DONALD L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MONSANTO CO
15 patentsUS5095140AMar 10, 1992
Peroxide process for producing N-phosphonomethylglycine
MONSANTO CO32 citations92
US5043475AAug 27, 1991
Peroxide process for producing N-phosphonomethylglycine
MONSANTO CO36 citations92
US5023369AJun 11, 1991
Process for producing N-phosphonomethylglycine
MONSANTO CO43 citations92
US4810426AMar 7, 1989
Process for making glyphosate from n-phosphonomethyl-2-oxazolidone
MONSANTO CO42 citations92
US4952723AAug 28, 1990
Process for producing N-phosphonomethylglycine
MONSANTO CO14 citations74
US4937376AJun 26, 1990
Process for producing N-phosphonomethylglycine
MONSANTO CO10 citations74
US4898972AFeb 6, 1990
Process for producing N-phosphonomethylglycine
MONSANTO CO6 citations74
US4965403AOct 23, 1990
Oxidation/dealkylation process
MONSANTO CO7 citations73
US4851159AJul 25, 1989
Process for the preparation of N- phosphonomethylglycine
MONSANTO CO7 citations72
US5077430ADec 31, 1991
Peroxide process for producing N-phosphonomethylglycine
MONSANTO CO4 citations63
US5047579ASep 10, 1991
Process for producing n-phosphonomethylglycine
MONSANTO CO7 citations62
US4889906ADec 26, 1989
Amine salts of 1,4,2-oxazaphospholidine-4-acetic acid, 2-alkoxy-2-oxides
MONSANTO CO5 citations62
US5072033ADec 10, 1991
Process for producing N-phosphonomethylglycine
MONSANTO CO5 citations61
US5041627AAug 20, 1991
Preparation of N-acyl-aminomethylphosphonates
MONSANTO CO4 citations61
US5061820AOct 29, 1991
Process for producing N-phosphonomethylgylcine
MONSANTO CO0 citations40
EASTMAN CHEM CO
8 patentsUS10407562B2Sep 10, 2019
Compounds with antidegradant and antifatigue efficacy and compositions including said compounds
EASTMAN CHEM CO1 citations72
US10287418B2May 14, 2019
Compounds with antidegradant and antifatigue efficacy and compositions including said compounds
EASTMAN CHEM CO1 citations72
US10611719B2Apr 7, 2020
Methods of making compounds and mixtures having antidegradant and antifatigue efficacy
EASTMAN CHEM CO1 citations62
US10428009B2Oct 1, 2019
Methods of making compounds and mixtures having antidegradant and antifatigue efficacy
EASTMAN CHEM CO1 citations62
US10260017B2Apr 16, 2019
Compounds and mixtures with antidegradant and antifatigue efficacy and compositions including said compounds
EASTMAN CHEM CO1 citations62
US10167252B2Jan 1, 2019
Compounds and mixtures with antidegradant and antifatigue efficacy and compositions including such compounds
EASTMAN CHEM CO1 citations62
US10160845B2Dec 25, 2018
Methods of making compounds and mixtures having antidegradant and antifatigue efficacy
EASTMAN CHEM CO1 citations51
US10160718B2Dec 25, 2018
Methods of making compounds having antidegradant and antifatigue efficacy
EASTMAN CHEM CO1 citations51
FLEXSYS AMERICA LP
6 patentsUS12410144B2Sep 9, 2025
Triazinane derivatives and methods of making them
FLEXSYS AMERICA LP0 citations60
US6187937B1Feb 13, 2001
Preparation of N-phenyl-benzoquinoneimine from hydroxydiphenylamines
FLEXSYS AMERICA LP2 citations56
US6043384AMar 28, 2000
Preparation of quinoneimines from hydroxyphenylamines using hydrogen peroxide and a catalyst
FLEXSYS AMERICA LP2 citations55
US6025508AFeb 15, 2000
Preparation of quinonediimines from phenylenediamines using oxygen and a metal or metal salt catalyst
FLEXSYS AMERICA LP2 citations55
US6072061AJun 6, 2000
Preparation of quinoneimines from hydroxyphenylamines using a hypochlorite as an oxidation agent
FLEXSYS AMERICA LP1 citations50
US6184385B1Feb 6, 2001
Process for the manufacture of a sulfenimide
FLEXSYS AMERICA LP1 citations41