TREA

Morio Watanabe

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  • Yokohama-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical fiber
    • Patent number 6,731,847
    • Issue date May 4, 2004
    • Sumitomo Electric Industries, Ltd.
    • Takatoshi Kato
    • G02 - OPTICS
  • Information Patent Grant

    Optical fiber having a large positive dispersion
    • Patent number 6,614,976
    • Issue date Sep 2, 2003
    • Sumitomo Electric Industries, Ltd.
    • Takatoshi Kato
    • G02 - OPTICS
  • Information Patent Grant

    Optical fiber
    • Patent number 6,337,942
    • Issue date Jan 8, 2002
    • Sumitomo Electric Industries, Ltd.
    • Takatoshi Kato
    • G02 - OPTICS
  • Information Patent Grant

    Process for producing glass preform for optical fiber
    • Patent number 5,597,398
    • Issue date Jan 28, 1997
    • Sumitomo Electric Industries, Ltd.
    • Shinji Ishikawa
    • C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

  • Information Patent Application

    Optical fiber
    • Publication number 20020106172
    • Publication date Aug 8, 2002
    • Sumitomo Electric Industries, Ltd.
    • Takatoshi Kato
    • G02 - OPTICS