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Satoru Kajiwara

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electrical contact for vacuum valve
    • Patent number 8,426,754
    • Issue date Apr 23, 2013
    • Hitachi, Ltd.
    • Shigeru Kikuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Switchgear
    • Patent number 7,683,286
    • Issue date Mar 23, 2010
    • Hitachi, Ltd.
    • Takashi Sato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Switchgear
    • Patent number 7,679,023
    • Issue date Mar 16, 2010
    • Hitachi, Ltd.
    • Takashi Sato
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical contacts for vacuum circuit breakers and methods of manu...
    • Patent number 7,662,208
    • Issue date Feb 16, 2010
    • Hitachi, Ltd.
    • Shigeru Kikuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switchgear system and kit for system
    • Patent number 7,457,105
    • Issue date Nov 25, 2008
    • Hitachi, Ltd.
    • Shuuichi Kikukawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Vacuum Switchgear
    • Patent number 7,223,932
    • Issue date May 29, 2007
    • Hitachi, Ltd.
    • Masato Kobayashi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switchgear
    • Patent number 7,135,652
    • Issue date Nov 14, 2006
    • Hitachi, Ltd.
    • Masato Kobayashi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Vacuum switchgear
    • Patent number 6,268,579
    • Issue date Jul 31, 2001
    • Hitachi, Ltd.
    • Satoru Kajiwara
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Insulated type switching device
    • Patent number RE37244
    • Issue date Jun 26, 2001
    • Hitachi, Ltd.
    • Tooru Tanimizu
    • 218 - High-voltage switches with arc preventing or extinguishing devices

Patents Applicationslast 30 patents