Katsuhiko Yoshida

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Kako, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing aromatic or heteroaromatic sulfonyl halides
- Patent number 5,811,571
- Issue date Sep 22, 1998
- Hitoshi Karino
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing 1,2-benzisothiazol-3-ones
- Patent number 5,773,626
- Issue date Jun 30, 1998
- Sumitomo Seika Chemicals Co., Ltd.
- Hirokazu Kagano
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing 1,2-benzisothiazol-3-ones
- Patent number 5,633,384
- Issue date May 27, 1997
- Sumitomo Seika Chemicals Co., Ltd.
- Hirokazu Kagano
- C07 - ORGANIC CHEMISTRY
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
Processes for producing 2-substituted benzo[B]thiophene
- Patent number 5,298,630
- Issue date Mar 29, 1994
- Sumitomo Seika Chemicals Co., Ltd.
- Hirokazu Kagano
- 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

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