Seiji Kumakura

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Hiromachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pyridazinone derivatives, their preparation and use
- Patent number 4,914,093
- Issue date Apr 3, 1990
- Sankyo Company Limited
- Yasuhiro Morisawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fused 5 ring heterocyclic compounds, their preparation, and their a...
- Patent number 4,716,162
- Issue date Dec 29, 1987
- Sankyo Company, Limited
- Kuniyuki Tomita
- C07 - ORGANIC CHEMISTRY