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Yoshiaki Hamasaki

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Patents Grantslast 30 patents

  • Information Patent Grant

    Pump apparatus
    • Patent number 8,591,203
    • Issue date Nov 26, 2013
    • JTEKT Corporation
    • Yoshihito Yoshihara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Electric pump apparatus
    • Patent number 6,287,090
    • Issue date Sep 11, 2001
    • Koyo Seiko Co., Ltd.
    • Yoshiaki Hamasaki
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Power steering device
    • Patent number 6,233,930
    • Issue date May 22, 2001
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gear pump
    • Patent number 6,048,187
    • Issue date Apr 11, 2000
    • Koyo Seiko Co., Ltd.
    • Yoshiaki Hamasaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Motor-driven hydraulic gear pump having a noise damper
    • Patent number 6,004,119
    • Issue date Dec 21, 1999
    • Koyo Seiko Co., Ltd.
    • Yoshiaki Hamasaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil tank
    • Patent number 5,356,535
    • Issue date Oct 18, 1994
    • Koyo Seiko Co., Ltd.
    • Hiroshi Ueno
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Reservoir supporting structure
    • Patent number 5,280,868
    • Issue date Jan 25, 1994
    • Koyo Seiko Co., Ltd.
    • Hiroshi Ueno
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Flow control apparatus
    • Patent number 5,220,939
    • Issue date Jun 22, 1993
    • Koyo Seiko Co., Ltd.
    • Yoshiaki Hamasaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic transmission coupling apparatus
    • Patent number 5,074,825
    • Issue date Dec 24, 1991
    • Koyo Seiko Co., Ltd.
    • Yoshiaki Hamasaki
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Power transmission apparatus
    • Patent number 4,995,491
    • Issue date Feb 26, 1991
    • Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    • Takeo Hiramatsu
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Power transmission apparatus
    • Patent number 4,980,521
    • Issue date Dec 25, 1990
    • Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    • Takeo Hiramatsu
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Drive coupling unit
    • Patent number 4,919,248
    • Issue date Apr 24, 1990
    • Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    • Takeo Hiramatsu
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Power transmission apparatus for a vehicle
    • Patent number 4,850,447
    • Issue date Jul 25, 1989
    • Koyo Seiko Co., Ltd.
    • Shuzo Hirakushi
    • B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    Elastic support device and power steering device
    • Publication number 20070007069
    • Publication date Jan 11, 2007
    • Yoshiaki Hamasaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Pump apparatus
    • Publication number 20050271533
    • Publication date Dec 8, 2005
    • FAVESS CO., LTD.
    • Yoshihito Yoshihara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...