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Seiji Hirakawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Axial flow fan and air-conditioning apparatus having axial flow fan
    • Patent number 10,767,656
    • Issue date Sep 8, 2020
    • Mitsubishi Electric Corporation
    • Shingo Hamada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Indoor unit for air-conditioning apparatus
    • Patent number 10,436,496
    • Issue date Oct 8, 2019
    • Mitsubishi Electric Corporation
    • Takashi Ikeda
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Indoor unit of an air-conditioning apparatus with grooved flow stab...
    • Patent number 9,879,868
    • Issue date Jan 30, 2018
    • Mitsubishi Electric Corporation
    • Seiji Hirakawa
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Indoor unit for air-conditioning apparatus with airflow blocking po...
    • Patent number 9,857,095
    • Issue date Jan 2, 2018
    • Mitsubishi Electric Corporation
    • Seiji Hirakawa
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Propeller fan
    • Patent number D803378
    • Issue date Nov 21, 2017
    • Mitsubishi Electric Corporation
    • Shingo Hamada
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Propeller fan
    • Patent number D800889
    • Issue date Oct 24, 2017
    • Mitsubishi Electric Corporation
    • Shingo Hamada
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Propeller fan
    • Patent number D800890
    • Issue date Oct 24, 2017
    • Mitsubishi Electric Corporation
    • Shingo Hamada
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Propeller fan
    • Patent number D782639
    • Issue date Mar 28, 2017
    • Mitsubishi Electric Corporation
    • Shingo Hamada
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Cross flow fan, air-sending device, and air-conditioning apparatus
    • Patent number 9,453,512
    • Issue date Sep 27, 2016
    • Mitsubishi Electric Corporation
    • Takahide Tadokoro
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Air conditioner
    • Patent number 7,673,671
    • Issue date Mar 9, 2010
    • Mitsubishi Denki Kabushiki Kaisha
    • Hiroki Okazawa
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Air conditioner
    • Patent number 7,517,185
    • Issue date Apr 14, 2009
    • Mitsubishi Denki Kabushiki Kaisha
    • Seiji Hirakawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    INDOOR UNIT AND AIR CONDITIONER
    • Publication number 20210131699
    • Publication date May 6, 2021
    • MITSUBISHI ELECTRIC CORPORATION
    • Tadakiyo SEKI
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    INDOOR UNIT FOR AIR-CONDITIONING APPARATUS AND AIR-CONDITIONING APP...
    • Publication number 20190257532
    • Publication date Aug 22, 2019
    • Mitsubishi Electric Corporation
    • Akinori SAKABE
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    AXIAL FLOW FAN AND AIR-CONDITIONING APPARATUS HAVING AXIAL FLOW FAN
    • Publication number 20180003190
    • Publication date Jan 4, 2018
    • Mitsubishi Electric Corporation
    • Shingo HAMADA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    INDOOR UNIT FOR AIR-CONDITIONING APPARATUS
    • Publication number 20170336083
    • Publication date Nov 23, 2017
    • Mitsubishi Electric Corporation
    • Mitsuhiro SHIROTA
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    INDOOR UNIT FOR AIR-CONDITIONING APPARATUS
    • Publication number 20160033162
    • Publication date Feb 4, 2016
    • Mitsubishi Electric Corporation
    • Seiji HIRAKAWA
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    INDOOR UNIT OF AIR-CONDITIONING APPARATUS
    • Publication number 20150300681
    • Publication date Oct 22, 2015
    • MITSUBISHI ELECTRIC CORPORATION
    • Seiji HIRAKAWA
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    INDOOR UNIT OF AIR-CONDITIONING APPARATUS
    • Publication number 20150300663
    • Publication date Oct 22, 2015
    • Mitsubishi Electric Corporation
    • Seiji HIRAKAWA
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    INDOOR UNIT FOR AIR-CONDITIONING APPARATUS
    • Publication number 20150056910
    • Publication date Feb 26, 2015
    • Mitsubishi Electric Corporation
    • Takashi Ikeda
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    CROSS FLOW FAN, AIR-SENDING DEVICE, AND AIR-CONDITIONING APPARATUS
    • Publication number 20130336788
    • Publication date Dec 19, 2013
    • Mitsubishi Electric Corporation
    • Takahide Tadokoro
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    INDOOR UNIT OF AIR CONDITIONER
    • Publication number 20120097367
    • Publication date Apr 26, 2012
    • MITSUBISHI ELECTRIC CORPORATION
    • Akihiro Goto
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    Air Conditioner
    • Publication number 20080181764
    • Publication date Jul 31, 2008
    • MITSUBISH DENKI KABUSHIKI KAISHA
    • Seiji Hirakawa
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    Air conditioner
    • Publication number 20070084235
    • Publication date Apr 19, 2007
    • Mitsubishi Denki Kabushiki Kaisha
    • Hiroki Okazawa
    • F24 - HEATING RANGES VENTILATING