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Tomoyuki Hatakeyama

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Patents Grantslast 30 patents

  • Information Patent Grant

    DC-DC converter
    • Patent number 9,755,524
    • Issue date Sep 5, 2017
    • Hitachi, Ltd.
    • Tomoyuki Hatakeyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC-DC converter
    • Patent number 8,934,265
    • Issue date Jan 13, 2015
    • Hitachi, Ltd.
    • Tomoyuki Hatakeyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    DC-DC Converter
    • Publication number 20150092452
    • Publication date Apr 2, 2015
    • Hitachi, Ltd
    • Tomoyuki HATAKEYAMA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DC-DC Converter
    • Publication number 20130100707
    • Publication date Apr 25, 2013
    • Hitachi, Ltd
    • Tomoyuki Hatakeyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    AC-DC CONVERTER AND METHOD OF CONTROLLING SAME
    • Publication number 20120275203
    • Publication date Nov 1, 2012
    • Takae Shimada
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...