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Yumiko Nagasaka
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Tsukuba, JP
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last 30 patents
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Patent Grant
Carboxylic acid derivatives having fused rings
Patent number
6,358,995
Issue date
Mar 19, 2002
Eisai Co., Ltd.
Katsuya Tagami
C07 - ORGANIC CHEMISTRY
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Patent Grant
Fused-ring carboxylic acid derivatives
Patent number
6,121,309
Issue date
Sep 19, 2000
Eisai Co., Ltd.
Katsuya Tagami
C07 - ORGANIC CHEMISTRY
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Patent Grant
Carboxylic acid derivatives having fused rings
Patent number
6,110,959
Issue date
Aug 29, 2000
Eisai Co., Ltd.
Katsuya Tagami
C07 - ORGANIC CHEMISTRY