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Takashi Hirai

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  • Chiyoda-ku, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical encoder
    • Patent number 8,829,421
    • Issue date Sep 9, 2014
    • Mitsubishi Electric Corporation
    • Takuya Noguchi
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Transformer inrush current suppression apparatus with function of d...
    • Patent number 8,779,634
    • Issue date Jul 15, 2014
    • Mitsubishi Electric Corporation
    • Hiroyuki Tsutada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Residual magnetic flux determining apparatus
    • Patent number 8,093,885
    • Issue date Jan 10, 2012
    • Mitsubishi Electric Corporation
    • Hiroyuki Tsutada
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Intrusion-object detection system, method of detecting intrusion-ob...
    • Patent number 7,994,912
    • Issue date Aug 9, 2011
    • Mitsubishi Electric Corporation
    • Kenji Inomata
    • G08 - SIGNALLING
  • Information Patent Grant

    Controlled switching device
    • Patent number 7,902,696
    • Issue date Mar 8, 2011
    • Mitsubishi Electric Corporation
    • Hiroyuki Tsutada
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Approach detecting system
    • Patent number 7,456,739
    • Issue date Nov 25, 2008
    • Mitsubishi Electric Corporation
    • Kenji Inomata
    • G08 - SIGNALLING
  • Information Patent Grant

    Transformer inrush current elimination system
    • Patent number 7,095,139
    • Issue date Aug 22, 2006
    • Mitsubishi Denki Kabushiki Kaisha
    • Hiroyuki Tsutada
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Controlled switching device
    • Patent number 6,433,980
    • Issue date Aug 13, 2002
    • Mitsubishi Denki Kabushiki Kaisha
    • Hiroyuki Tsutada
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Supervisory apparatus for oil-filled electrical equipment
    • Patent number 5,949,343
    • Issue date Sep 7, 1999
    • Mitsubishi Denki Kabushiki Kaisha
    • Takashi Sesekura
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Roof system utilizing a solar cell
    • Patent number 5,706,617
    • Issue date Jan 13, 1998
    • Hirai Engineering Corporation
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Roof mounted light transmitting frame
    • Patent number 5,531,049
    • Issue date Jul 2, 1996
    • Hirai Engineering Corporation
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Roof system utilizing a solar cell
    • Patent number 5,497,587
    • Issue date Mar 12, 1996
    • Hirai Engineering Corporation
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Roof
    • Patent number 5,406,936
    • Issue date Apr 18, 1995
    • Hirai Engineering Corporation
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Roof apparatus
    • Patent number 5,367,843
    • Issue date Nov 29, 1994
    • Hirai Engineering Corporation
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Roof
    • Patent number 5,121,583
    • Issue date Jun 16, 1992
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Solar energy collecting roof
    • Patent number 4,228,791
    • Issue date Oct 21, 1980
    • Showa Aluminium K.K.
    • Takashi Hirai
    • F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents