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Masafumi Okamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Epoxy resin adhesive agent
    • Patent number 11,242,476
    • Issue date Feb 8, 2022
    • Sumitomo Seika Chemicals Co., Ltd.
    • Masafumi Okamoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Method for producing aliphatic polycarbonate
    • Patent number 8,779,087
    • Issue date Jul 15, 2014
    • Sumitomo Seika Chemicals Co., Ltd.
    • Nobutaka Fujimoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

  • Information Patent Application

    RESIN DISPERSION COMPOSITION
    • Publication number 20230257561
    • Publication date Aug 17, 2023
    • Sumitomo Seika Chemicals Co., Ltd.
    • Masafumi OKAMOTO
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    AQUEOUS ETHYLENE RESIN DISPERSION AND AQUEOUS HEAT SEALING MATERIAL
    • Publication number 20200270380
    • Publication date Aug 27, 2020
    • Sumitomo Seika Chemicals Co., Ltd.
    • Junichi MIZUKAWA
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    EPOXY RESIN ADHESIVE AGENT
    • Publication number 20160355711
    • Publication date Dec 8, 2016
    • Sumitomo Seika Chemicals Co., Ltd.
    • Masafumi OKAMOTO
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    METHOD FOR PRODUCING ALIPHATIC POLYCARBONATE
    • Publication number 20120123066
    • Publication date May 17, 2012
    • SUMITOMO SEIKA CHEMICALS CO., LTD.
    • Nobutaka Fujimoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Organic Zinc Catalyst, and Process for Production of Poly(Alkylene...
    • Publication number 20090240025
    • Publication date Sep 24, 2009
    • SUMITOMO SEIKA CHEMICALS CO., LTD.
    • Nobutaka Fujimoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Method for producing resin for chemically amplified positive resist
    • Publication number 20070072120
    • Publication date Mar 29, 2007
    • SUMITOMO SEIKA CHEMICALS CO., LTD.
    • Shinya Okazaki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Polyaminopyridines and method for producing same
    • Publication number 20060293503
    • Publication date Dec 28, 2006
    • SUMITOMO SEIKA CHEMICALS CO., LTD.
    • Takaki Kanbara
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...