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Toru Nakaishi
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Osaka, JP
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last 30 patents
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Patent Grant
Method for producing heteroaromatic aldehydes
Patent number
6,444,815
Issue date
Sep 3, 2002
Koei Chemical Co., Ltd.
Tetsushi Nishiyama
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing pyrazine compounds
Patent number
5,693,806
Issue date
Dec 2, 1997
Koei Chemical Co., Ltd.
Takayuki Shoji
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing nitriles
Patent number
4,931,561
Issue date
Jun 5, 1990
Koei Chemical Co., Ltd.
Shinkichi Shimizu
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing nitriles
Patent number
4,778,890
Issue date
Oct 18, 1988
Koei Chemical Co., Ltd.
Shinkichi Shimizu
C07 - ORGANIC CHEMISTRY