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Ophthalmic preparations
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Patent number 6,232,343
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Issue date May 15, 2001
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Toray Industries, Inc.
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Takashi Ikari
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Biologically active substance
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Patent number 5,000,953
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Issue date Mar 19, 1991
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Kaken Chemical Co., Ltd.
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Michio Ui
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Proteinic active substances
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Patent number 4,234,570
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Issue date Nov 18, 1980
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Kakenyaku Kako Kabushiki Kaisha
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Yoshinori Kanbayashi
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C07 - ORGANIC CHEMISTRY