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Lao-Jer Chen
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Houston, TX, US
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last 30 patents
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Patent Grant
Composition and method of preparation of viscosity-stabilized polyi...
Patent number
5,169,878
Issue date
Dec 8, 1992
The Dow Chemical Company
Lao-Jer Chen
C07 - ORGANIC CHEMISTRY
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Patent Grant
Color reduction of polymeric isocyanates via multiple solvent fract...
Patent number
4,876,380
Issue date
Oct 24, 1989
The Dow Chemical Company
Lao-Jer Chen
C07 - ORGANIC CHEMISTRY