William S. Derwin

Person

Buffalo, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Isolation of products from selective dehalogenation of haloaromatics
- Patent number 6,303,812
- Issue date Oct 16, 2001
- Occidental Chemical Corporation
- Michael J. Fifolt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Reducing meta content of isomeric mixtures of halo substituted alky...
- Patent number 6,284,934
- Issue date Sep 4, 2001
- Occidental Chemical Corporation
- Michael J. Fifolt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making 3,5-dichloro-p-toluoyl chloride
- Patent number 6,201,152
- Issue date Mar 13, 2001
- Occidental Chemical Corporation
- Michael J. Fifolt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chlorination and bromination of aromatic compounds at atmospheric p...
- Patent number 6,118,018
- Issue date Sep 12, 2000
- Occidental Chemical Corporation
- Michael C. Savidakis
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making trifluoromethoxybenzenes
- Patent number 6,118,028
- Issue date Sep 12, 2000
- Occidental Chemical Corporation
- Kevin R. Benson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making .alpha.-chloroxylenes
- Patent number 6,117,278
- Issue date Sep 12, 2000
- Occidental Chemical Corporation
- Sanjay Mandal
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making trichloromethoxybenzene
- Patent number 5,773,668
- Issue date Jun 30, 1998
- Occidental Chemical Corporation
- Lawrence Fertel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 3,4,6-trifluorophthalic acid
- Patent number 5,596,104
- Issue date Jan 21, 1997
- Occidental Chemical Corporation
- Neil J. O'Reilly
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making 3-methoxy-2,4,5-trifluorobenzoic acid
- Patent number 5,380,926
- Issue date Jan 10, 1995
- Occidental Chemical Corporation
- Lawrence B. Fertel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for selective hydrodefluorination
- Patent number 5,294,738
- Issue date Mar 15, 1994
- Occidental Chemical Corporation
- Jeffrey S. Stults
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making 3-hydroxy-2,4,5-trifluorobenzoic acid
- Patent number 5,233,082
- Issue date Aug 3, 1993
- Occidental Chemical Corporation
- Lawrence B. Fertel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,...
- Patent number 5,233,085
- Issue date Aug 3, 1993
- Occidental Chemical Corporation
- Neil J. O'Reilly
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Selective removal of chlorine from chlorophthalic compounds
- Patent number 4,981,999
- Issue date Jan 1, 1991
- Occidental Chemical Corporation
- Neil J. O'Reilly
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,...
- Patent number 4,935,541
- Issue date Jun 19, 1990
- Occidental Chemical Corporation
- Neil J. O'Reilly
- C07 - ORGANIC CHEMISTRY

William S. Derwin

Person

Patents Grantslast 30 patents

Isolation of products from selective dehalogenation of haloaromatics

Reducing meta content of isomeric mixtures of halo substituted alky...

Method of making 3,5-dichloro-p-toluoyl chloride

Chlorination and bromination of aromatic compounds at atmospheric p...

Method of making trifluoromethoxybenzenes

Method of making .alpha.-chloroxylenes

Method of making trichloromethoxybenzene

Preparation of 3,4,6-trifluorophthalic acid

Method of making 3-methoxy-2,4,5-trifluorobenzoic acid

Process for selective hydrodefluorination

Method of making 3-hydroxy-2,4,5-trifluorobenzoic acid

Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,...

Selective removal of chlorine from chlorophthalic compounds

Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,...