Hiroyo Kawafuchi

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Nakaniikawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Quinolonecarboxylic acid derivatives or salts thereof
- Patent number 6,335,447
- Issue date Jan 1, 2002
- Toyama Chemical Co., Ltd.
- Kazuya Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1,2-benzoisoxazole derivative or its salt and brain-protecting agen...
- Patent number 5,578,627
- Issue date Nov 26, 1996
- Toyama Chemical Co., Ltd.
- Kenji Takeda
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Piperazine derivative or its salt, process for producing the same a...
- Patent number 4,948,796
- Issue date Aug 14, 1990
- Toyama Chemical Co., Ltd.
- Toru Hiraiwa
- C07 - ORGANIC CHEMISTRY