Toshiaki Shimizu

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Biotin intermediate and process for preparing the same
- Patent number 7,799,929
- Issue date Sep 21, 2010
- Tanabe Seiyaku Co., Ltd.
- Masahiko Seki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Intermediate for biotin and process for producing the same
- Patent number 7,335,778
- Issue date Feb 26, 2008
- Tanabe Seiyaku Co., Ltd.
- Masahiko Seki
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Biotin intermediate and process for preparing the same
- Publication number 20080119655
- Publication date May 22, 2008
- Masahiko Seki
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Intermediate for biotin and process for producing the same
- Publication number 20050038260
- Publication date Feb 17, 2005
- Masahiko Seki
- C07 - ORGANIC CHEMISTRY