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Nissan Chemical Industries, Ltd.
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Papermaking method
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Patent number 4,952,279
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Issue date Aug 28, 1990
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Nissan Chemical Industries Ltd.
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Hisao Ikeda
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Papermaking method
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Patent number 4,840,705
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Issue date Jun 20, 1989
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Nissan Chemical Industries Ltd.
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Hisao Ikeda
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