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Yoshihiro Hatakeyama

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Uninterrupted power supply unit
    • Patent number 8,502,415
    • Issue date Aug 6, 2013
    • Mitsubishi Denki Kabushiki Kaisha
    • Masaki Yamada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply apparatus
    • Patent number 7,964,990
    • Issue date Jun 21, 2011
    • Mitsubishi Denki Kabushiki Kaisha
    • Masaki Yamada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Instantaneous voltage lowering detection device
    • Patent number 7,034,515
    • Issue date Apr 25, 2006
    • Mitsubishi Denki Kabushiki Kaisha
    • Yasufumi Shimoe
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Trip control device for circuit breaker
    • Patent number 5,375,032
    • Issue date Dec 20, 1994
    • Mitsubishi Denki Kabushiki Kaisha
    • Yoshihiro Hatakeyama
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Overcurrent detector circuit for a circuit-breaker
    • Patent number 5,353,188
    • Issue date Oct 4, 1994
    • Mitsubishi Denki Kabushiki Kaisha
    • Yoshihiro Hatakeyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Trip control apparatus of circuit breaker
    • Patent number 4,901,184
    • Issue date Feb 13, 1990
    • Mitsubishi Denki Kabushiki Kaisha
    • Kazuhiro Ishii
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Overcurrent detector
    • Patent number 4,819,125
    • Issue date Apr 4, 1989
    • Mitsubishi Denki Kabushiki Kaisha
    • Ichirou Arinobu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Circuit breaker reactive to three time-overcurrent characteristics
    • Patent number 4,814,935
    • Issue date Mar 21, 1989
    • Mitsubishi Denki Kabushiki Kaisha
    • Ichirou Arinobu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power source device for circuit breaker
    • Patent number 4,752,865
    • Issue date Jun 21, 1988
    • Mitsubishi Denki Kabushiki Kaisha
    • Yoshihiro Hatakeyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    UNINTERRUPTED POWER SUPPLY UNIT
    • Publication number 20110215648
    • Publication date Sep 8, 2011
    • Mitsubishi Denki Kabushiki Kaisha
    • Masaki YAMADA
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Power supply apparatus
    • Publication number 20070164613
    • Publication date Jul 19, 2007
    • Misubishi Denki Kabushiki Kaisha
    • Masaki Yamada
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Instantaneous voltage lowering detection device
    • Publication number 20060012379
    • Publication date Jan 19, 2006
    • Yasufumi Shimoe
    • G01 - MEASURING TESTING