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Masayuki Fujio

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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of manufacturing an impeller
    • Patent number 5,697,152
    • Issue date Dec 16, 1997
    • Hitachi, Ltd.
    • Susumu Yamazaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Blower muffling apparatus
    • Patent number 5,672,052
    • Issue date Sep 30, 1997
    • Hitachi, Ltd.
    • Fumiaki Ishida
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vortex flow blower and vane wheel therefor
    • Patent number 5,628,615
    • Issue date May 13, 1997
    • Hitachi, Ltd.
    • Hiroshi Asabuki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method of making vortex flow blower and vane wheel therefor
    • Patent number 5,600,886
    • Issue date Feb 11, 1997
    • Hitachi, Ltd.
    • Hiroshi Asabuki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vortex blower
    • Patent number 5,569,023
    • Issue date Oct 29, 1996
    • Hitachi, Ltd.
    • Fumiaki Ishida
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vortex flow blower having blades each formed by curved surface
    • Patent number 5,536,139
    • Issue date Jul 16, 1996
    • Hitachi, Ltd.
    • Susumu Yamazaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vortex flow blower and vane wheel therefor
    • Patent number 5,487,639
    • Issue date Jan 30, 1996
    • Hitachi, Ltd.
    • Hiroshi Asabuki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vortex flow blower having blades each formed by curved surface and...
    • Patent number 5,395,210
    • Issue date Mar 7, 1995
    • Hitachi, Ltd.
    • Susumu Yamazaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vortex flow blower
    • Patent number 5,281,083
    • Issue date Jan 25, 1994
    • Hitachi, Ltd.
    • Eiichi Ito
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vortex blower
    • Patent number D327316
    • Issue date Jun 23, 1992
    • Hitachi, Ltd.
    • Toshiharu Yoshidomi
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Vortex blower
    • Patent number 4,412,781
    • Issue date Nov 1, 1983
    • Hitachi Ltd.
    • Masahiro Abe
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...