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Thermoresponsive recording paper sheet
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Patent number 4,605,940
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Issue date Aug 12, 1986
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Yoshitomi Pharmaceutical Industries, Ltd.
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Ryoichi Kinishi
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Thermoresponsive recording sheet
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Patent number 4,558,335
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Issue date Dec 10, 1985
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Yoshitomi Pharmaceutical Industries, Ltd.
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Naoki Hanayama
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Method of producing polyurethanes
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Patent number 4,404,352
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Issue date Sep 13, 1983
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Yoshitomi Pharmaceutical Industries, Ltd.
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Koreyoshi Suenobu
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Method of producing polyurethanes
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Patent number 4,322,519
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Issue date Mar 30, 1982
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Yoshitomi Pharmaceutical Industries, Ltd.
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Koreyoshi Suenobu
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...