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Feng-Chih Chang
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Angleton, TX, US
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last 30 patents
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Patent Grant
Process for the preparation of epoxy resins
Patent number
4,582,892
Issue date
Apr 15, 1986
The Dow Chemical Company
Feng-chih Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Purification of bisphenols by removing residual solvent
Patent number
4,533,764
Issue date
Aug 6, 1985
The Dow Chemical Company
Feng-Chih Chang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for obtaining high purity bisphenol A
Patent number
4,354,046
Issue date
Oct 12, 1982
The Dow Chemical Company
Glen R. Ladewig
C07 - ORGANIC CHEMISTRY