TREA

Takashi Shirone

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Switch unit and switchgear
    • Patent number 8,975,550
    • Issue date Mar 10, 2015
    • Hitachi, Ltd.
    • Daisuke Sugai
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Switchgear and method for operating switchgear
    • Patent number 8,710,388
    • Issue date Apr 29, 2014
    • Hitachi, Ltd.
    • Tomoaki Utsumi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Vacuum switchgear
    • Patent number 7,244,903
    • Issue date Jul 17, 2007
    • Hitachi, Ltd.
    • Tomoaki Utsumi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switchgear
    • Patent number 6,884,940
    • Issue date Apr 26, 2005
    • Hitachi, Ltd.
    • Tomoaki Utsumi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas insulation transformer
    • Patent number 6,859,124
    • Issue date Feb 22, 2005
    • Hitachi, Ltd.
    • Akira Nishimizu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    System for utilizing exhaust heat of stationary induction apparatus
    • Patent number 5,669,228
    • Issue date Sep 23, 1997
    • Hitachi, Ltd.
    • Takashi Iga
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

  • Information Patent Application

    Switch Unit and Switchgear
    • Publication number 20120175234
    • Publication date Jul 12, 2012
    • Hitachi, Ltd
    • Daisuke SUGAI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Switchgear and Method for Operating Switchgear
    • Publication number 20110036811
    • Publication date Feb 17, 2011
    • Hitachi, Ltd
    • Tomoaki Utsumi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Vacuum switchgear
    • Publication number 20050173143
    • Publication date Aug 11, 2005
    • Tomoaki Utsumi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    VACUUM SWITCHGEAR
    • Publication number 20050103514
    • Publication date May 19, 2005
    • Tomoaki Utsumi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Gas insulation transformer
    • Publication number 20030080841
    • Publication date May 1, 2003
    • Hitachi, Ltd
    • Akira Nishimizu
    • H01 - BASIC ELECTRIC ELEMENTS