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Nirad N. Shah
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Houston, TX, US
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last 30 patents
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Patent Grant
Ortho-alkylation of aromatic amines
Patent number
5,124,483
Issue date
Jun 23, 1992
The Dow Chemical Company
Guo-shuh J. Lee
C07 - ORGANIC CHEMISTRY
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Patent Grant
Ortho-alkylation of aromatic amines
Patent number
5,072,047
Issue date
Dec 10, 1991
The Dow Chemical Company
Guo-shuh J. Lee
C07 - ORGANIC CHEMISTRY
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Patent Grant
Process for polymeric MDA, recycle of finished polymeric MDA
Patent number
4,792,624
Issue date
Dec 20, 1988
The Dow Chemical Company
Richard Hatfield
C07 - ORGANIC CHEMISTRY
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Patent Grant
Process for preparing methylene dianilines
Patent number
4,294,987
Issue date
Oct 13, 1981
The Upjohn Company
Richard A. Prather
C07 - ORGANIC CHEMISTRY