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Yumiko Otake

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical waveguides and methods thereof
    • Patent number 8,420,293
    • Issue date Apr 16, 2013
    • Sumitomo Bakelite Co., Ltd.
    • Koji Choki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Optical waveguides and methods thereof
    • Patent number 8,053,166
    • Issue date Nov 8, 2011
    • Sumitomo Bakelite Co. Ltd.
    • Koji Choki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Optical waveguides and methods thereof
    • Patent number 8,021,825
    • Issue date Sep 20, 2011
    • Sumitomo Bakelite Co., Ltd.
    • Koji Choki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Optical waveguides and methods thereof
    • Patent number 7,820,356
    • Issue date Oct 26, 2010
    • Sumitomo Bakelite Co. Ltd.
    • Koji Choki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTICAL WAVEGUIDES AND METHODS THEREOF
    • Publication number 20120064458
    • Publication date Mar 15, 2012
    • PROMERUS, LLC
    • Koji CHOKI
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    OPTICAL WAVEGUIDES AND METHODS THEREOF
    • Publication number 20100062378
    • Publication date Mar 11, 2010
    • SUMITOMO BAKELITE CO., LTD.
    • Koji Choki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    OPTICAL WAVEGUIDES AND METHODS THEREOF
    • Publication number 20100061688
    • Publication date Mar 11, 2010
    • SUMITOMO BAKELITE CO., LTD.
    • Koji Choki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Optical waveguides and methods thereof
    • Publication number 20070148566
    • Publication date Jun 28, 2007
    • SUMITOMO BAKELITE CO., LTD.
    • Koji Choki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...