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Akihiro YAMASHITA

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  • Niigata, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    VINYL ALCOHOL-BASED POLYMER
    • Publication number 20230313021
    • Publication date Oct 5, 2023
    • DENKA COMPANY LIMITED
    • Akihiro YAMASHITA
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    POLYVINYL ALCOHOL-BASED POLYMER
    • Publication number 20230242687
    • Publication date Aug 3, 2023
    • DENKA COMPANY LIMITED
    • Akihiro YAMASHITA
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    POLYVINYL ALCOHOL-BASED POLYMER
    • Publication number 20230212332
    • Publication date Jul 6, 2023
    • DENKA COMPANY LIMITED
    • Akihiro YAMASHITA
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    METHOD FOR PRODUCING POLYVINYL ALCOHOL
    • Publication number 20210189028
    • Publication date Jun 24, 2021
    • Akihiro YAMASHITA
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    ADDITIVE FOR OIL WELL CEMENT AND CEMENT SLURRY USING SAID ADDITIVE...
    • Publication number 20200377780
    • Publication date Dec 3, 2020
    • DENKA COMPANY LIMITED
    • Akihiro YAMASHITA
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    VINYL ALCOHOL POLYMER AND CEMENT SLURRY COMPRISING SAME
    • Publication number 20200224076
    • Publication date Jul 16, 2020
    • DENKA COMPANY LIMITED
    • Akihiro YAMASHITA
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES