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Polymer, production and use thereof
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Patent number 4,849,228
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Issue date Jul 18, 1989
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Takeda Chemical Industries, Ltd.
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Masaki Yamamoto
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Polymer, production and use thereof
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Patent number 4,728,721
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Issue date Mar 1, 1988
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Takeda Chemical Industries, Ltd.
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Masaki Yamamoto
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Polymer and its production
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Patent number 4,683,288
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Issue date Jul 28, 1987
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Waco Pure Chemical Ind. Inc.
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Motoaki Tanaka
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Process for producing water-soluble polymers
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Patent number 4,260,713
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Issue date Apr 7, 1981
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Wako Pure Chemical Industries, Ltd.
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Motoaki Tanaka
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...