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Biau-Hung Chang
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West Chester, OH, US
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last 30 patents
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Patent Grant
Process for making graft propylene polymers
Patent number
5,344,886
Issue date
Sep 6, 1994
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for making graft propylene polymers
Patent number
5,344,888
Issue date
Sep 6, 1994
Quantum Chemical Corporation
Leslie Wild
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for making an aliphatic polyester by copolymerizing a cycli...
Patent number
5,270,411
Issue date
Dec 14, 1993
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for converting vinyl alcohol polymers to poly(keto-esters)...
Patent number
5,219,930
Issue date
Jun 15, 1993
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for converting polyketones to poly(keto-esters)
Patent number
5,140,080
Issue date
Aug 18, 1992
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Poly(keto-esters)
Patent number
5,064,932
Issue date
Nov 12, 1991
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for oxidizing polymers derived from unsaturated ketones
Patent number
5,064,912
Issue date
Nov 12, 1991
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for converting polyketones containing pendant functional gr...
Patent number
4,957,997
Issue date
Sep 18, 1990
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for converting polyketones to polyesters
Patent number
4,929,711
Issue date
May 29, 1990
Quantum Chemical Corporation
Biau-Hung Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Conversion of an allylic ether to its corresponding carbonyl compound
Patent number
4,788,325
Issue date
Nov 29, 1988
National Distillers and Chemical Corporation
Biau-Hung Chang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Conversion of an allylic ether to its corresponding acetal
Patent number
4,743,401
Issue date
May 10, 1988
National Distillers and Chemical Corporation
Biau-Hung Chang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Alkyl 9-alkoxy-7-nonenoates
Patent number
4,681,709
Issue date
Jul 21, 1987
National Distillers and Chemical Corporation
Biau-Hung Chang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for converting an alkoxyalkadiene to an alkyl dialkoxyalkan...
Patent number
4,681,708
Issue date
Jul 21, 1987
National Distillers and Chemical Corporation
Biau-Hung Chang
C07 - ORGANIC CHEMISTRY