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Kenichi Okubo

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas circuit breaker and breaker for gas insulated switching device
    • Patent number 9,953,778
    • Issue date Apr 24, 2018
    • Hitachi Ltd.
    • Hiroaki Hashimoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas circuit breaker
    • Patent number 9,640,349
    • Issue date May 2, 2017
    • Hitachi, Ltd.
    • Hiroaki Hashimoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas-insulated switchgear
    • Patent number 9,425,589
    • Issue date Aug 23, 2016
    • Hitachi, Ltd.
    • Hiroaki Hashimoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas circuit breaker
    • Patent number 9,324,510
    • Issue date Apr 26, 2016
    • Hitachi, Ltd.
    • Hiroaki Hashimoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Circuit breaker
    • Patent number 7,880,105
    • Issue date Feb 1, 2011
    • Japan AE Power Systems Corporation
    • Hiroaki Hashimoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas circuit-breaker
    • Patent number 7,528,336
    • Issue date May 5, 2009
    • Japan AE Power Systems Corporation
    • Hiroaki Hashimoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Hydraulic operating apparatus for switch
    • Patent number 6,875,941
    • Issue date Apr 5, 2005
    • Japan AE Power Systems Corporation
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas-insulated switch
    • Patent number 6,831,244
    • Issue date Dec 14, 2004
    • Hitachi, Ltd.
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas-insulated switch
    • Patent number 6,762,387
    • Issue date Jul 13, 2004
    • Hitachi, Ltd.
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas-insulated switch
    • Patent number 6,717,088
    • Issue date Apr 6, 2004
    • Hitachi, Ltd.
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    GAS CIRCUIT BREAKER AND BREAKER FOR GAS INSULATED SWITCHING DEVICE
    • Publication number 20170309428
    • Publication date Oct 26, 2017
    • Hitachi, Ltd
    • Hiroaki HASHIMOTO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas Circuit Breaker
    • Publication number 20150380179
    • Publication date Dec 31, 2015
    • Hitachi, Ltd
    • Hiroaki HASHIMOTO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas-Insulated Switchgear
    • Publication number 20150236485
    • Publication date Aug 20, 2015
    • Hitachi, Ltd
    • Hiroaki Hashimoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Gas Circuit Breaker
    • Publication number 20150136739
    • Publication date May 21, 2015
    • Hitachi, Ltd
    • Hiroaki HASHIMOTO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas Circuit Breaker
    • Publication number 20140076854
    • Publication date Mar 20, 2014
    • Hitachi, Ltd
    • Kenichi OKUBO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    CIRCUIT BREAKER
    • Publication number 20090201109
    • Publication date Aug 13, 2009
    • JAPAN AE POWER SYSTEMS CORPORATION
    • Hiroaki Hashimoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas circuit-breaker
    • Publication number 20070068903
    • Publication date Mar 29, 2007
    • Hiroaki Hashimoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Hydraulic operating apparatus for switch
    • Publication number 20050006349
    • Publication date Jan 13, 2005
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas-insulated switch
    • Publication number 20040211757
    • Publication date Oct 28, 2004
    • Hitachi, Ltd.
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas-insulated switch
    • Publication number 20040020899
    • Publication date Feb 5, 2004
    • Hitachi, Ltd.
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas-insulated switch
    • Publication number 20030201250
    • Publication date Oct 30, 2003
    • Hitachi, Ltd.
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas-insulated switch
    • Publication number 20030015499
    • Publication date Jan 23, 2003
    • Hideo Kawamoto
    • H01 - BASIC ELECTRIC ELEMENTS