TREA

Junji Kato

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  • Narashino-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Inverter apparatus
    • Patent number 6,844,700
    • Issue date Jan 18, 2005
    • Hitachi, Ltd.
    • Keijiro Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Inverter apparatus
    • Patent number 6,741,063
    • Issue date May 25, 2004
    • Hitachi, Ltd.
    • Keijiro Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    AC current detecting device for inverter apparatus and AC current d...
    • Patent number 6,693,404
    • Issue date Feb 17, 2004
    • Hitachi, Ltd.
    • Masahiro Hiraga
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Control apparatus for alternating-current motor
    • Patent number 6,570,358
    • Issue date May 27, 2003
    • Hitachi, Ltd.
    • Junnosuke Nakatsugawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    PWM converter system
    • Patent number 6,556,464
    • Issue date Apr 29, 2003
    • Hitachi, Ltd.
    • Keijirou Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Inverter device
    • Patent number 6,496,397
    • Issue date Dec 17, 2002
    • Hitachi, Ltd.
    • Keijiro Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    Inverter apparatus
    • Publication number 20040008005
    • Publication date Jan 15, 2004
    • Keijiro Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    AC current detecting device for inverter apparatus and AC current d...
    • Publication number 20030020430
    • Publication date Jan 30, 2003
    • Hitachi, Ltd
    • Masahiro Hiraga
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Inverter apparatus
    • Publication number 20030020432
    • Publication date Jan 30, 2003
    • Keijiro Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Control apparatus for alternating-current motor
    • Publication number 20020167289
    • Publication date Nov 14, 2002
    • Hitachi, Ltd.
    • Junnosuke Nakatsugawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    PWM converter system
    • Publication number 20020154526
    • Publication date Oct 24, 2002
    • Keijirou Sakai
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Inverter device
    • Publication number 20010043481
    • Publication date Nov 22, 2001
    • Keijiro Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER