Nobuo Niikawa

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sulfoxide compounds and acetone complexes, and a process for produc...
- Patent number 6,545,024
- Issue date Apr 8, 2003
- Eisai Co., Ltd.
- Masahiko Tsujii
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of pyridine derivatives
- Patent number 6,313,303
- Issue date Nov 6, 2001
- Eisai Co., Ltd.
- Katsuya Tagami
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfoxide compounds and acetone complexes, and a process for produc...
- Patent number 6,180,652
- Issue date Jan 30, 2001
- Eisai Co., Ltd.
- Masahiko Tsujii
- C07 - ORGANIC CHEMISTRY