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Yasuyuki Katoh
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Kanagawa, JP
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last 30 patents
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Patent Grant
Novel quinolonecarboxylic acid derivatives
Patent number
5,051,509
Issue date
Sep 24, 1991
Chugai Seiyaku Kabushiki Kaisha
Hiroyuki Nagano
C07 - ORGANIC CHEMISTRY
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Patent Grant
Novel diamine derivatives
Patent number
4,855,497
Issue date
Aug 8, 1989
Chugai Seiyaku Kabushiki Kaisha
Mitiro Takagi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE