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last 30 patents
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Patent Grant
2,5-dichlorophenylthioglycolic acid derivative and method for its p...
Patent number
5,352,821
Issue date
Oct 4, 1994
Sumitomo Seika Chemicals Co., Ltd.
Hiroshi Goda
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Production of thiophene-2,5-dicarboxylic acid diesters, tetrahydrot...
Patent number
5,310,940
Issue date
May 10, 1994
Sumitomo Seika Chemicals Co., Ltd.
Hiroshi Goda
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Production of dibenzoxazolylthiophenes
Patent number
5,221,749
Issue date
Jun 22, 1993
Sumitomo Seika Chemicals Co., Ltd.
Hiroshi Goda
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
2,5-dichlorophenylthioglycolic acid derivative and method for its p...
Patent number
5,210,287
Issue date
May 11, 1993
Sumitomo Seika Chemicals Co., Ltd.
Hiroshi Goda
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Production of thiophene-2,5-dicarboxylic acid diesters, tetrahydrot...
Patent number
5,093,504
Issue date
Mar 3, 1992
Sumitomo Seika Chemicals, Co., Ltd.
Hiroshi Goda
C07 - ORGANIC CHEMISTRY