Sadao Asahi

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing N-tert-butyl-2-pyrazinecarboxamide and N-tert...
- Patent number 5,922,873
- Issue date Jul 13, 1999
- Koei Chemical Co., Ltd.
- Nanao Watanabe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing N-tert-butyl-2-pyrazinecarboxamide and N-tert...
- Patent number 5,734,055
- Issue date Mar 31, 1998
- Koei Chemical Co. Ltd.
- Nanao Watanabe
- C07 - ORGANIC CHEMISTRY