Michihiro Kawasaki

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for purifying phenol
- Patent number 5,334,774
- Issue date Aug 2, 1994
- Sumitomo Chemical Company, Limited
- Kayoko Kogure
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing N-alkyl-substituted aminophenols
- Patent number 5,276,193
- Issue date Jan 4, 1994
- Sumitomo Chemical Co., Ltd.
- Hiroshi Maki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing N-alkylaminophenols
- Patent number 5,202,485
- Issue date Apr 13, 1993
- Sumitomo Chemical Co., Ltd.
- Hiroshi Maki
- C07 - ORGANIC CHEMISTRY