Yasuo Ohnuki

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Processes for the preparation of diphenylsulfone compounds
- Patent number 7,619,120
- Issue date Nov 17, 2009
- Nippon Soda Co., Ltd.
- Kiyoshi Katsuura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing diphenyl sulfone compound
- Patent number 6,831,201
- Issue date Dec 14, 2004
- Nippon Soda Co., Ltd.
- Kiyoshi Katsuura
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Processes for the preparation of diphenylsulfone compounds
- Publication number 20050065377
- Publication date Mar 24, 2005
- Nippon Soda Co., Ltd.
- Kiyoshi Katsuura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for producing diphenyl sulfone compound
- Publication number 20030092941
- Publication date May 15, 2003
- Kiyoshi Katsuura
- C07 - ORGANIC CHEMISTRY