TREA

Yasuhiro Ishikawa

Follow

Person

  • Tokyo, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Optical waveguide device
    • Patent number 9,081,139
    • Issue date Jul 14, 2015
    • Sumitomo Osaka Cement Co., Ltd.
    • Miki Okamura
    • G02 - OPTICS
  • Information Patent Grant

    Optical control element
    • Patent number 9,081,214
    • Issue date Jul 14, 2015
    • Sumitomo Osaka Cement Co., Ltd.
    • Satoshi Oikawa
    • G02 - OPTICS
  • Information Patent Grant

    Optical waveguide device
    • Patent number 8,923,658
    • Issue date Dec 30, 2014
    • Sumitomo Osaka Cement Co., Ltd.
    • Yasuhiro Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Light control device
    • Patent number 8,526,768
    • Issue date Sep 3, 2013
    • Sumitomo Osaka Cement Co., Ltd.
    • Yuhki Kinpara
    • G02 - OPTICS
  • Information Patent Grant

    Optical control device
    • Patent number 8,380,015
    • Issue date Feb 19, 2013
    • Sumitomo Osaka Cement Co., Ltd.
    • Yuhki Kinpara
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 7,362,924
    • Issue date Apr 22, 2008
    • Sumitomo Osaka Cement Co., Ltd.
    • Masayuki Ichioka
    • G02 - OPTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTICAL CONTROL ELEMENT
    • Publication number 20130251301
    • Publication date Sep 26, 2013
    • SUMITOMO OSAKA CEMENT CO., LTD.
    • Satoshi Oikawa
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL WAVEGUIDE DEVICE
    • Publication number 20130064492
    • Publication date Mar 14, 2013
    • Sumitomo Osaka Cement Co., Ltd.
    • Yasuhiro Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL WAVEGUIDE DEVICE
    • Publication number 20120183252
    • Publication date Jul 19, 2012
    • SUMITOMO OSAKA CEMENT CO., LTD.
    • Miki Okamura
    • G02 - OPTICS
  • Information Patent Application

    Light control device
    • Publication number 20100264855
    • Publication date Oct 21, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Yuhki Kinpara
    • G02 - OPTICS
  • Information Patent Application

    Optical control device
    • Publication number 20100266234
    • Publication date Oct 21, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Yuhki Kinpara
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL WAVEGUIDE TYPE MODULATOR
    • Publication number 20100247023
    • Publication date Sep 30, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Yasuhiro Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    Optical modulator
    • Publication number 20070053625
    • Publication date Mar 8, 2007
    • Sumitomo Osaka Cement Co., Ltd.
    • Masayuki Ichioka
    • G02 - OPTICS