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.beta.-lactam compounds
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Patent number 5,122,604
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Issue date Jun 16, 1992
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Sumitomo Pharmaceuticals Co., Ltd.
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Makoto Sunagawa
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C07 - ORGANIC CHEMISTRY
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Beta-lactam compounds
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Patent number 5,093,328
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Issue date Mar 3, 1992
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Sumitomo Pharmaceuticals Company, Limited
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Makoto Sunagawa
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C07 - ORGANIC CHEMISTRY
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.beta.-lactam compounds
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Patent number 4,933,333
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Issue date Jun 12, 1990
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Sumitomo Pharmaceuticals Co., Ltd.
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Makoto Sunagawa
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C07 - ORGANIC CHEMISTRY
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Cephem derivatives
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Patent number 4,761,409
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Issue date Aug 2, 1988
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Sumitomo Pharmaceuticals Company, Limited
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Hirotada Yamada
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C07 - ORGANIC CHEMISTRY
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Cephem compounds
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Patent number 4,705,784
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Issue date Nov 10, 1987
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Sumitomo Pharmaceuticals Company, Limited
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Hirotada Yamada
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE