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Keiichi Tsuzura

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas insulated switchgear
    • Patent number 6,560,091
    • Issue date May 6, 2003
    • Hitachi, Ltd.
    • Masahiro Takahoshi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas insulated switchgear
    • Patent number 6,556,428
    • Issue date Apr 29, 2003
    • Hitachi, Ltd.
    • Masahiro Takahoshi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas insulated switchgear
    • Patent number 6,515,247
    • Issue date Feb 4, 2003
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas insulated switchgear apparatus
    • Patent number 6,399,911
    • Issue date Jun 4, 2002
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas insulated switchgear with flange-spacer assembly
    • Patent number 6,337,452
    • Issue date Jan 8, 2002
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas insulated switching apparatus
    • Patent number 6,278,073
    • Issue date Aug 21, 2001
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Gas insulated switch gear and method for assembling therefor
    • Patent number 6,219,225
    • Issue date Apr 17, 2001
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gas insulated switchgear with flange-spacer assembly
    • Patent number 6,188,034
    • Issue date Feb 13, 2001
    • Hitachi, Ltd.
    • Keiichi Tsuzura
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER