Inventor · disambiguated record
William E. Leistner
Also filed as: HARUNA TOHRU · LEISTNER WILLIAM E
23 granted patents·1,177 citations·filing 1976–1994
96Inventor score
Files withFAIRMOUNT CHEMICAL COMPANY INC6ARGUS CHEM5ADEKA ARGUS CHEMICAL CO LTD4PHOENIX CHEMICAL CORP3LEISTNER WILLIAM E2
Top patents by PatentIndex Score
23 records- 0197US5237071AProcess for preparing 2,2'-methylene-bis(6-(2H-benzotriazol-2-yl)-4-hydrocarbyl phenols)FAIRMOUNT CHEMICAL COMPANY INC·Filed 1991·Granted Aug 17, 1993·486 cites·20 claims
- 0295US5166355AProcess for preparing substituted 2,2'-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-hydrocarbyl-phenols]FAIRMOUNT CHEM·Filed 1991·Granted Nov 24, 1992·484 cites·18 claims
- 0392US5362881ACoupled benzotriazole and benzophenone UV absorbersFAIRMOUNT CHEMICAL COMPANY INC·Filed 1993·Granted Nov 8, 1994·42 cites·18 claims
- 0476US5373037ACoupled benzotriazole and benzophenone UV absorbersFAIRMOUNT CHEMICAL COMPANY INC·Filed 1994·Granted Dec 13, 1994·16 cites·20 claims
- 0576US5292890AAsymmetrical benzotriazolylphenolsFAIRMOUNT CHEMICAL COMPANY INC·Filed 1993·Granted Mar 8, 1994·14 cites·2 claims
- 0675US4692485AVinyl benzyl 2,2,6,6-tetramethyl piperidinesADEKA ARGUS CHEMICAL CO LTD·Filed 1985·Granted Sep 8, 1987·12 cites·25 claims
- 0774US4104217ACarbonate ester stabilizers for polymersARGUS CHEM·Filed 1977·Granted Aug 1, 1978·16 cites·17 claims
- 0873US4529760AOligomers of 2,2,6,6-tetramethylpiperidinol polycarboxylic acid esters and synthetic polymer compositionsADEKA ARGUS CHEMICAL CO LTD·Filed 1983·Granted Jul 16, 1985·22 cites·44 claims
- 0970US5360850AAsymmetrical benzotriazolylphenolsFAIRMOUNT CHEMICAL COMPANY INC·Filed 1993·Granted Nov 1, 1994·10 cites·11 claims
- 1065US4371651AStabilizer compositions and polyvinyl halide resin compositions containing 1,3-dicarbonyl compoundsPHOENIX CHEMICAL CORP·Filed 1981·Granted Feb 1, 1983·8 cites·6 claims
- 1162US4381360A1,3-Dicarbonyl compounds and polyvinyl halide resin compositions containing the samePHOENIX CHEMICAL CORP·Filed 1981·Granted Apr 26, 1983·14 cites·48 claims
- 1260US4463112APhenylethylidene-substituted phenyl polyphosphitesLEISTNER WILLIAM E·Filed 1980·Granted Jul 31, 1984·13 cites·19 claims
- 1358US4052427AProcess for the preparation of dialkyltin dihalidesWITCO CHEMICAL CORP·Filed 1976·Granted Oct 4, 1977·5 cites·11 claims
- 1456US4460725APolyethers containing 2,2,6,6-tetramethyl piperidinyl carboxylic acid ester groups and synthetic resin compositionsLEISTNER WILLIAM E·Filed 1983·Granted Jul 17, 1984·10 cites·25 claims
- 1548US4346025AStabilized vinyl chloride polymer comprising a phenylethylidene aryl phosphiteADEKA ARGUS CHEMICAL CO LTD·Filed 1980·Granted Aug 24, 1982·7 cites·12 claims
- 1644US4450248AHindered piperidyl light stabilizersPHOENIX CHEMICAL CORP·Filed 1981·Granted May 22, 1984·8 cites·18 claims
- 1741US5466819ACoupled benzotriazole and benzophenone UV absorbersFAIRMOUNT CHEMICAL COMPANY INC·Filed 1994·Granted Nov 14, 1995·1 cites·15 claims
- 1838US4257927AInorganic organic coester stabilizersARGUS CHEM·Filed 1978·Granted Mar 24, 1981·2 cites·20 claims
- 1936US4174297APolyhydric phenol coester stabilizersARGUS CHEM·Filed 1976·Granted Nov 13, 1979·2 cites·13 claims
- 2033US4146517AInorganic and organic acid coester stabilizersARGUS CHEM·Filed 1977·Granted Mar 27, 1979·2 cites·14 claims
- 2131US5262541AFluorenol catalyzed reduction of o-nitroazobenzenes and 2-aryl-2H-benzotriazole-N-oxidesFAIRMONT CHEMICAL COMPANY INC·Filed 1992·Granted Nov 16, 1993·2 cites·22 claims
- 2230US4233414APolyhydric phenol coester stabilizersARGUS CHEM·Filed 1979·Granted Nov 11, 1980·0 cites·16 claims
- 2329US4767834AVinyl benzyl 2,2,6,6-tetramethyl piperidinesADEKA ARGUS CHEMICAL CO LTD·Filed 1987·Granted Aug 30, 1988·1 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →