Kazuharu Suyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing trimethylhydroquinone
- Patent number 6,441,249
- Issue date Aug 27, 2002
- Nippon Petrochemicals Company, Limited
- Kazuharu Suyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 2-substituted propionic acid
- Patent number 6,441,218
- Issue date Aug 27, 2002
- Nippon Petrochemicals Company, Limited
- Saisuke Watanabe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing trimethylhydroquinone
- Patent number 6,320,086
- Issue date Nov 20, 2001
- Nippon Petrochemicals Company Limited
- Kazuharu Suyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing dehydrogenated compounds of m-ethyldiphenylal...
- Patent number 6,300,534
- Issue date Oct 9, 2001
- Nippon Petrochemicals Company, Limited
- Tomohiro Konishi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing trimethylhydroquinone
- Patent number 6,211,418
- Issue date Apr 3, 2001
- Nippon Petrochemicals Company Limited
- Kazuharu Suyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing cyclopentadienes
- Patent number 5,723,708
- Issue date Mar 3, 1998
- Nippon Petrochemicals Company, Limited
- Yasuo Matsumura
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Process for producing 2-substituted propionic acid
- Publication number 20010041742
- Publication date Nov 15, 2001
- Saisuke Watanabe
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for producing trimethylhydroquinone
- Publication number 20010039366
- Publication date Nov 8, 2001
- Nippon Petrochemicals Company Limited
- Kazuharu Suyama
- C07 - ORGANIC CHEMISTRY