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Calvin T. Chew
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Warrenville, IL, US
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last 30 patents
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Patent Grant
Stabilized dual bed xylene isomerization catalyst system
Patent number
6,518,472
Issue date
Feb 11, 2003
BP Corporation North America Inc.
Allen I. Feinstein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Liquid phase oxidation of alcohols to prepare carboxylic acids
Patent number
5,166,424
Issue date
Nov 24, 1992
Amoco Corporation
Kristi A. Fjare
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for production of polycarboxylic aromatic acids
Patent number
4,906,772
Issue date
Mar 6, 1990
Amoco Corporation
Calvin T. Chew
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for selectively removing process stream impurities utilizing...
Patent number
4,855,491
Issue date
Aug 8, 1989
Amoco Corporation
Calvin T. Chew
C07 - ORGANIC CHEMISTRY