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Takahisa Fujita

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Traveling wave optical modulator
    • Patent number 8,559,768
    • Issue date Oct 15, 2013
    • Sumitomo Osaka Cement Co., Ltd.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 8,068,703
    • Issue date Nov 29, 2011
    • Sumitomo Osaka Cement Co., Ltd.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 8,031,987
    • Issue date Oct 4, 2011
    • Sumitomo Osaka Cement Co., Ltd.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Grant

    Method and device for controlling bias of optical modulator
    • Patent number 7,899,338
    • Issue date Mar 1, 2011
    • Sumitomo Osaka Cement Co., Ltd.
    • Yoshihiro Hashimoto
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 7,822,297
    • Issue date Oct 26, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 7,397,974
    • Issue date Jul 8, 2008
    • Sumitomo Osaka Cement Co., Ltd.
    • Junichiro Ichikawa
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 7,245,788
    • Issue date Jul 17, 2007
    • Sumitomo Osaka Cement Co., Ltd.
    • Takahisa Fujita
    • G02 - OPTICS
  • Information Patent Grant

    Method and device for stabilizing operation point and optical outpu...
    • Patent number 6,924,916
    • Issue date Aug 2, 2005
    • Sumitomo Osaka Cement Co., Ltd.
    • Takahisa Fujita
    • G02 - OPTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    Optical modulator
    • Publication number 20110026868
    • Publication date Feb 3, 2011
    • Sumitomo Osaka Cement Co., Ltd.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Application

    Traveling wave optical modulator
    • Publication number 20100027934
    • Publication date Feb 4, 2010
    • Sumitomo Osaka Cement Co.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Application

    Optical Modulator
    • Publication number 20090290828
    • Publication date Nov 26, 2009
    • Sumitomo Osaka Cement Co. Ltd.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Application

    Optical Modulator
    • Publication number 20090252500
    • Publication date Oct 8, 2009
    • Sumitomo Osaka Cement Co., Ltd.
    • Ryo Shimizu
    • G02 - OPTICS
  • Information Patent Application

    Method and device for controlling bias of optical modulator
    • Publication number 20070019968
    • Publication date Jan 25, 2007
    • Yoshihiro Hashimoto
    • G02 - OPTICS
  • Information Patent Application

    Optical modulator
    • Publication number 20060165337
    • Publication date Jul 27, 2006
    • Sumitomo Osaka Cement Co., Ltd.
    • Takahisa Fujita
    • G02 - OPTICS
  • Information Patent Application

    Optical modulator
    • Publication number 20040264827
    • Publication date Dec 30, 2004
    • Junichiro Ichikawa
    • G02 - OPTICS
  • Information Patent Application

    Method and device for stabilizing operation point and optical outpu...
    • Publication number 20040190103
    • Publication date Sep 30, 2004
    • Sumitomo Osaka Cement Co., Ltd.
    • Takahisa Fujita
    • G02 - OPTICS