Masayuki Hanzawa

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Koriyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Industrial process for the production of diphenyl sulfone compounds
- Patent number 7,241,924
- Issue date Jul 10, 2007
- Nippon Soda Co., Ltd.
- Syuichiro Sanpei
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Industrial process for the production of diphenyl sulfone compounds
- Patent number 6,590,126
- Issue date Jul 8, 2003
- Nippon Soda Co., Ltd.
- Syuichiro Sanpei
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Industrial process for the production of diphenyl sulfone compounds
- Publication number 20040030191
- Publication date Feb 12, 2004
- Syuichiro Sanpei
- C07 - ORGANIC CHEMISTRY