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Akira Yokota

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical film
    • Patent number 10,139,540
    • Issue date Nov 27, 2018
    • Sumitomo Chemical Company, Limited
    • Nobuyuki Hatanaka
    • G02 - OPTICS
  • Information Patent Grant

    Optical film
    • Patent number 9,696,475
    • Issue date Jul 4, 2017
    • Sumitomo Chemical Company, Limited
    • Nobuyuki Hatanaka
    • G02 - OPTICS
  • Information Patent Grant

    Optical Film
    • Patent number 9,541,691
    • Issue date Jan 10, 2017
    • Sumitomo Chemical Company, Limited
    • Nobuyuki Hatanaka
    • G02 - OPTICS
  • Information Patent Grant

    Optical film
    • Patent number 9,529,130
    • Issue date Dec 27, 2016
    • Sumitomo Chemical Company, Limited
    • Nobuyuki Hatanaka
    • G02 - OPTICS
  • Information Patent Grant

    Optically anisotropic sheet
    • Patent number 9,442,232
    • Issue date Sep 13, 2016
    • Sumitomo Chemical Company, Limited
    • Nobuyuki Hatanaka
    • B32 - LAYERED PRODUCTS
  • Information Patent Grant

    Elliptical polarization plate
    • Patent number 9,383,492
    • Issue date Jul 5, 2016
    • Sumitomo Chemical Company, Limited
    • Nobuyuki Hatanaka
    • B32 - LAYERED PRODUCTS
  • Information Patent Grant

    Highly purified epoxy resin
    • Patent number 6,818,727
    • Issue date Nov 16, 2004
    • Sumitomo Chemical Company, Limited
    • Akira Yokota
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Polyether and its production method
    • Patent number 6,815,523
    • Issue date Nov 9, 2004
    • Sumitomo Chemical Company, Limited
    • Akira Yokota
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Polyether copolymer
    • Patent number 6,706,850
    • Issue date Mar 16, 2004
    • Sumitomo Chemical Company, Limited
    • Yuji Yoshida
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Polyether resin and coating solution for forming insulation film
    • Patent number 6,388,044
    • Issue date May 14, 2002
    • Sumitomo Chemical Company, Limited
    • Yuji Yoshida
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Epoxy resin and resin-sealed type semiconductor apparatus
    • Patent number 6,312,829
    • Issue date Nov 6, 2001
    • Sumitomo Chemical Company, Limited
    • Akira Yokota
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Epoxy resin, resin composition, and resin-encapsulated semiconducto...
    • Patent number 5,939,473
    • Issue date Aug 17, 1999
    • Sumitomo Chemical Company, Limited
    • Yasuhiro Hirano
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Epoxy resin, resin composition, and resin-encapsulated semiconducto...
    • Patent number 5,939,509
    • Issue date Aug 17, 1999
    • Sumitomo Chemical Company, Ltd.
    • Yasuhiro Hirano
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Epoxy resin stilbenes and process for producing the same by photois...
    • Patent number 5,854,370
    • Issue date Dec 29, 1998
    • Sumitomo Chemical Company, Limited
    • Akira Yokota
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Epoxy resin and process for producing the same
    • Patent number 5,705,596
    • Issue date Jan 6, 1998
    • Sumitomo Chemical Company, Limited
    • Akira Yokota
    • C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTICALLY ANISOTROPIC FILM AND METHOD FOR PRODUCING OPTICALLY ANISO...
    • Publication number 20160124131
    • Publication date May 5, 2016
    • Sumitomo Chemical Company, Limited
    • Tadahiro KOBAYASHI
    • G02 - OPTICS
  • Information Patent Application

    METHOD FOR PRODUCING LAMINATED BODY
    • Publication number 20150070764
    • Publication date Mar 12, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • B32 - LAYERED PRODUCTS
  • Information Patent Application

    OPTICALLY ANISOTROPIC SHEET
    • Publication number 20150062505
    • Publication date Mar 5, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL FILM
    • Publication number 20150049291
    • Publication date Feb 19, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL FILM
    • Publication number 20150042944
    • Publication date Feb 12, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • G02 - OPTICS
  • Information Patent Application

    ELLIPTICAL POLARIZATION PLATE
    • Publication number 20150042942
    • Publication date Feb 12, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • B32 - LAYERED PRODUCTS
  • Information Patent Application

    OPTICAL FILM
    • Publication number 20150043071
    • Publication date Feb 12, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL FILM
    • Publication number 20150042943
    • Publication date Feb 12, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL FILM
    • Publication number 20150042941
    • Publication date Feb 12, 2015
    • Sumitomo Chemical Company, Limited
    • Nobuyuki HATANAKA
    • G02 - OPTICS
  • Information Patent Application

    NOVEL CELLULASE DERIVED FROM THERMOSPOROTHRIX HAZAKENSIS
    • Publication number 20130252284
    • Publication date Sep 26, 2013
    • Kennan Eisei Kogyo Co., Ltd.
    • Shuhei Yabe
    • C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
  • Information Patent Application

    Resin and a coating solution for forming insulating film, and a met...
    • Publication number 20050277751
    • Publication date Dec 15, 2005
    • Sumitomo Chemical Company, Limited
    • Naoya Satoh
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Composition for porous organic film
    • Publication number 20050025892
    • Publication date Feb 3, 2005
    • Sumitomo Chemical Company, Limited
    • Naoya Satoh
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Polyether and its production method
    • Publication number 20030187177
    • Publication date Oct 2, 2003
    • Akira Yokota
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    HIGHLY PURIFIED EPOXY RESIN
    • Publication number 20020177683
    • Publication date Nov 28, 2002
    • Sumitomo Chemical Company,Limited
    • AKIRA YOKOTA
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Polyether copolymer
    • Publication number 20020006999
    • Publication date Jan 17, 2002
    • Yuji Yoshida
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...