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Ken K. Chang
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Dublin, OH, US
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Patents Grants
last 30 patents
Information
Patent Grant
Heat-cured furan binder system
Patent number
7,125,914
Issue date
Oct 24, 2006
Ashland Licensing and Intellectual Property LLC
Ken K. Chang
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Furan no-bake foundry binders and their use
Patent number
6,593,397
Issue date
Jul 15, 2003
Ashland Inc.
Ken K. Chang
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Foundry binder systems containing an alkyl resorcinol and their use
Patent number
6,559,203
Issue date
May 6, 2003
Ashland Inc.
David A. Hutchings
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Furan no-bake foundry binders and their use
Patent number
6,479,567
Issue date
Nov 12, 2002
Ashland Inc.
Ken K. Chang
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Furan no-bake foundry binders and their use
Patent number
6,391,942
Issue date
May 21, 2002
Ashland Inc.
Ken K. Chang
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Solventless polyurethane no-brake foundry binder
Patent number
6,291,550
Issue date
Sep 18, 2001
Ashland Inc.
Chia-hung Chen
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Solventless polyurethane no-bake foundry binder
Patent number
6,063,833
Issue date
May 16, 2000
Ashland Inc.
Chia-hung Chen
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Polyurethane forming no-bake foundry binders
Patent number
6,017,978
Issue date
Jan 25, 2000
Ashland Inc.
Chia-hung Chen
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Use of bisphenol a tar in furan no-bake foundry binders
Patent number
5,856,375
Issue date
Jan 5, 1999
Ashland, Inc.
Ken K. Chang
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Heat cured foundry binder systems and their uses
Patent number
5,612,392
Issue date
Mar 18, 1997
Ashland Inc.
Ken K. Chang
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Polyurethane-forming no-bake foundry binder systems
Patent number
5,516,859
Issue date
May 14, 1996
Ashland Inc.
William R. Dunnavant
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Ester cured no-bake foundry binder system
Patent number
5,424,376
Issue date
Jun 13, 1995
Ashland Inc.
Ken K. Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Thermoplastic polyester low profile additives for vinyl ester/polye...
Patent number
5,254,642
Issue date
Oct 19, 1993
Ashland Oil, Inc.
Ken K. Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Thermoplastic polyester low profile additives for vinyl ester resin...
Patent number
5,116,917
Issue date
May 26, 1992
Ashland Oil, Inc.
Ken K. Chang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Heat-cured furan binder system
Publication number
20050090578
Publication date
Apr 28, 2005
Ken K. Chang
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Foundry binder systems containing an alkyl resorcinol and their use
Publication number
20030055125
Publication date
Mar 20, 2003
David A. Hutchings
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Furan no-bake foundry binders and their use
Publication number
20030036583
Publication date
Feb 20, 2003
ASHLAND INC.
Ken K. Chang
B22 - CASTING POWDER METALLURGY