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Method for preparing chitosan
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Patent number 5,232,842
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Issue date Aug 3, 1993
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Shin-Estu Chemical Co., Ltd.
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Okmi Park
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C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
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Cement composition for extrusion
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Patent number 5,047,086
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Issue date Sep 10, 1991
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Shin-Etsu Chemical Co., Ltd.
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Kazuhisa Hayakawa
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Hard medicinal capsule
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Patent number 4,917,885
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Issue date Apr 17, 1990
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Shin-Etsu Chemical Co., Ltd.
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Tohru Chiba
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Film capacitor
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Patent number 4,843,517
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Issue date Jun 27, 1989
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Shin-Etsu Chemical Co., Ltd.
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Kazumasa Maruyama
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H01 - BASIC ELECTRIC ELEMENTS
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