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Dehydrating and water-retaining sheet
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Patent number 4,645,698
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Issue date Feb 24, 1987
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Showa Denko Kabushiki Kaisha
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Mamoru Matsubara
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Delayed-swelling absorbent systems
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Patent number 4,548,847
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Issue date Oct 22, 1985
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Kimberly-Clark Corporation
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Gerard M. Aberson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2636575
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Patent number 2,636,575
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Issue date Apr 28, 1953
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1784536
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Patent number 1,784,536
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Issue date Dec 9, 1930
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C01 - INORGANIC CHEMISTRY
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1667316
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Patent number 1,667,316
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Issue date Apr 24, 1928
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F26 - DRYING