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Hiromasa Ashitani

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  • Shiga, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Refrigerant pump with rotors in bearing
    • Patent number 7,040,875
    • Issue date May 9, 2006
    • Matsushita Electric Industrial Co., Ltd.
    • Masao Nakano
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Semiconductor cooling device
    • Patent number 6,915,653
    • Issue date Jul 12, 2005
    • Matsushita Electric Industrial Co., Ltd.
    • Masao Nakano
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor cooling device and method of controlling same
    • Patent number 6,862,895
    • Issue date Mar 8, 2005
    • Matsushita Electric Industrial Co., Ltd.
    • Masao Nakano
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Cooling device for semiconductor elements
    • Patent number 6,826,923
    • Issue date Dec 7, 2004
    • Matsushita Electric Industrial Co., Ltd.
    • Masao Nakano
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Scroll gas compressor having asymmetric bypass holes
    • Patent number 6,273,691
    • Issue date Aug 14, 2001
    • Matsushita Electric Industrial Co., Ltd.
    • Takashi Morimoto
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor
    • Patent number 6,102,671
    • Issue date Aug 15, 2000
    • Matsushita Electric Industrial Co., Ltd.
    • Shuichi Yamamoto
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor having bypass valves
    • Patent number 5,855,475
    • Issue date Jan 5, 1999
    • Matsushita Electric Industrial Co., Ltd.
    • Katsuharu Fujio
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    Heat radiator
    • Publication number 20050016720
    • Publication date Jan 27, 2005
    • Hiromasa Ashitani
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Refrigerant pump and cooling device employing same
    • Publication number 20040253127
    • Publication date Dec 16, 2004
    • Masao Nakano
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Semiconductor cooling device
    • Publication number 20040250563
    • Publication date Dec 16, 2004
    • Masao Nakano
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor cooling device
    • Publication number 20040250558
    • Publication date Dec 16, 2004
    • Masao Nakano
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor cooling device and method of controlling same
    • Publication number 20030200758
    • Publication date Oct 30, 2003
    • Masao Nakano
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Cooling device for semiconductor elements
    • Publication number 20030200762
    • Publication date Oct 30, 2003
    • Masao Nakano
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Refrigerant pump
    • Publication number 20030202891
    • Publication date Oct 30, 2003
    • Masao Nakano
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...