Naohiro Yoshikawa

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Patents Grantslast 30 patents

Information 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

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PURIFICATION OF PYRIDINE, AND METHOD FOR PRODUCTION OF C...
- Publication number 20100324299
- Publication date Dec 23, 2010
- Sumitomo Seika Chemicals Co., Ltd.
- Naohiro Yoshikawa
- C07 - ORGANIC CHEMISTRY