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Colin Hewlett
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Middlesbrough, GB
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last 30 patents
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Patent Grant
Preparation of carboxylic acid anhydrides
Patent number
4,698,187
Issue date
Oct 6, 1987
The Halcon SD Group, Inc.
Colin Hewlett
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Preparation of carboxylic acid anhydrides
Patent number
4,559,183
Issue date
Dec 17, 1985
The Halcon SD Group, Inc.
Colin Hewlett
C07 - ORGANIC CHEMISTRY