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Kaoru Higuma

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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical modulator
    • Patent number 9,250,455
    • Issue date Feb 2, 2016
    • Sumitomo Osaka Cement Co., Ltd.
    • Youichi Hosokawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Optical receiver
    • Patent number 8,577,225
    • Issue date Nov 5, 2013
    • Sumitomo Osaka Cement Co., Ltd.
    • Masahito Mure
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Optical receiver
    • Patent number 8,180,226
    • Issue date May 15, 2012
    • Sumitomo Osaka Cement Co., Ltd.
    • Masahito Mure
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • 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

    Method for generating carrier residual signal and its device
    • Patent number 7,869,668
    • Issue date Jan 11, 2011
    • Sumitomo Osaka Cement Co., Ltd.
    • Yoshihiro Hashimoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Optical modulation device
    • Patent number 7,773,833
    • Issue date Aug 10, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Kaoru Higuma
    • G02 - OPTICS
  • Information Patent Grant

    THZ wave generator
    • Patent number 7,768,696
    • Issue date Aug 3, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Kaoru Higuma
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 7,751,724
    • Issue date Jul 6, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Yoshihiro Hashimoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Nested modulator
    • Patent number 7,689,067
    • Issue date Mar 30, 2010
    • Sumitomo Osaka Cement Co., Ltd.
    • Junichiro Ichikawa
    • G02 - OPTICS
  • Information Patent Grant

    Y-junction reflector tunable delay or resonator waveguide devices
    • Patent number 7,657,139
    • Issue date Feb 2, 2010
    • The Regents of the University of California
    • Jianxiao Chen
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator
    • Patent number 7,302,120
    • Issue date Nov 27, 2007
    • Sumitomo Osaka Cement Co., Ltd.
    • Toshio Sakane
    • G02 - OPTICS
  • Information Patent Grant

    Optical SSB modulator
    • Patent number 7,239,763
    • Issue date Jul 3, 2007
    • National Institute of Information and Communications Technology, Incorporated...
    • Tetsuya Kawanishi
    • G02 - OPTICS
  • Information Patent Grant

    Optical modulator and optical signal and electric wave signal conve...
    • Patent number 6,788,832
    • Issue date Sep 7, 2004
    • Communications Research Laboratory, Independent Administrative Institution
    • Tetsuya Kawanishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Light limiter
    • Patent number 6,539,153
    • Issue date Mar 25, 2003
    • NEC Corporation
    • Yasuhisa Taneda
    • G02 - OPTICS
  • Information Patent Grant

    Light limiter
    • Patent number 6,233,385
    • Issue date May 15, 2001
    • NEC Corporation
    • Yasuhisa Taneda
    • G02 - OPTICS
  • Information Patent Grant

    Optical fuse
    • Patent number 6,218,658
    • Issue date Apr 17, 2001
    • NEC Corporation
    • Yasuhisa Taneda
    • G02 - OPTICS
  • Information Patent Grant

    Light intensity attenuator and attenuating method
    • Patent number 6,134,372
    • Issue date Oct 17, 2000
    • Sumitomo Osaka Cement Co., Ltd.
    • Junichiro Ichikawa
    • G02 - OPTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTICAL MODULATOR
    • Publication number 20130195394
    • Publication date Aug 1, 2013
    • National Institute of Information and Communications Technology
    • Youichi HOSOKAWA
    • G02 - OPTICS
  • Information Patent Application

    Optical Receiver
    • Publication number 20120301158
    • Publication date Nov 29, 2012
    • Sumitomo Osaka Cement Co., Ltd.
    • Masahito Mure
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    OPTICAL MODULATOR
    • Publication number 20110164844
    • Publication date Jul 7, 2011
    • Sumitomo Osaka Cement Co., Ltd.
    • Kaoru Higuma
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    OPTICAL RECEIVER
    • Publication number 20110075149
    • Publication date Mar 31, 2011
    • SUMITOMO OSAKA CEMENT CO., LTD.
    • Masahito Mure
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Optical receiver
    • Publication number 20110052212
    • Publication date Mar 3, 2011
    • Sumitomo Osaka Cement Co., Ltd.
    • Masahito Mure
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    OPTICAL MODULATION DEVICE
    • Publication number 20090097795
    • Publication date Apr 16, 2009
    • SUMITOMO OSAKA CEMENT CO., LTD.
    • Kaoru Higuma
    • G02 - OPTICS
  • Information Patent Application

    THZ WAVE GENERATOR
    • Publication number 20090052013
    • Publication date Feb 26, 2009
    • Sumitomo Osaka Cement Co., Ltd.
    • Kaoru Higuma
    • G02 - OPTICS
  • Information Patent Application

    Y-Junction Reflector Tunable Delay or Resonator Waveguide Devices
    • Publication number 20080267565
    • Publication date Oct 30, 2008
    • Jianxiao Chen
    • G02 - OPTICS
  • Information Patent Application

    Nested modulator
    • Publication number 20080212915
    • Publication date Sep 4, 2008
    • Sumitomo Osaka Cement Co., Ltd.
    • Junichiro Ichikawa
    • G02 - OPTICS
  • Information Patent Application

    Method for Generating Carrier Residual Signal and Its Device
    • Publication number 20070292142
    • Publication date Dec 20, 2007
    • Sumitomo Osaka Cement Co., Ltd.
    • Yoshihiro Hashimoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    OPTICAL MODULATOR
    • Publication number 20070195396
    • Publication date Aug 23, 2007
    • Yoshihiro HASHIMOTO
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • 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 20060285787
    • Publication date Dec 21, 2006
    • Sumitomo Osaka Cement Co., Ltd.
    • Toshio Sakane
    • G02 - OPTICS
  • Information Patent Application

    Optical SSB modulator
    • Publication number 20050220385
    • Publication date Oct 6, 2005
    • NATIONAL INSTITUTE OF INFORMATION & COMMUNICATIONS TECHNOLOGY, INCORPORATED A...
    • Tetsuya Kawanishi
    • G02 - OPTICS
  • Information Patent Application

    Optical modulator and optical signal and electric wave signal conve...
    • Publication number 20030128417
    • Publication date Jul 10, 2003
    • Communications Res. Lab., Ind. Admin. Inst.
    • Tetsuya Kawanishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Light limiter
    • Publication number 20010012431
    • Publication date Aug 9, 2001
    • NEC Corporation
    • Yasuhisa Taneda
    • G02 - OPTICS