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Jun Maruyama

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Patents Grantslast 30 patents

  • Information Patent Grant

    Bearing seal
    • Patent number 7,946,592
    • Issue date May 24, 2011
    • Komatsu Corporation
    • Hiroshi Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bearing seal and swing device
    • Patent number 7,914,209
    • Issue date Mar 29, 2011
    • Komatsu Ltd.
    • Hiroshi Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bearing seal and swing device
    • Patent number 7,748,907
    • Issue date Jul 6, 2010
    • Komatsu Ltd.
    • Hiroshi Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bearing seal and swing device
    • Patent number 7,513,690
    • Issue date Apr 7, 2009
    • Komatsu Ltd.
    • Hiroshi Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulically driven type working machine
    • Patent number 6,578,296
    • Issue date Jun 17, 2003
    • Komatsu Ltd.
    • Kenzo Kimoto
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Damper of hydraulic pilot valve
    • Patent number 5,983,942
    • Issue date Nov 16, 1999
    • Komatsu Ltd.
    • Masayoshi Mototani
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus for preventing reverse rotation for hydraulic actuator
    • Patent number 5,862,665
    • Issue date Jan 26, 1999
    • Komatsu Ltd.
    • Jun Maruyama
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Damper of hydraulic pilot valve
    • Patent number 5,845,680
    • Issue date Dec 8, 1998
    • Komatsu Ltd.
    • Masayoshi Mototani
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulic pilot valve
    • Patent number 5,819,800
    • Issue date Oct 13, 1998
    • Komatsu Ltd.
    • Shuji Hori
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Multiple valve unit for pressurized fluid supply system
    • Patent number 5,622,206
    • Issue date Apr 22, 1997
    • Kabushiki Kaisha Komatsu Seisakusho
    • Masamitsu Takeuchi
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hydraulic pilot valve
    • Patent number 5,558,127
    • Issue date Sep 24, 1996
    • Kabushiki Kaisha Komatsu Seisakusho
    • Jun Maruyama
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Pressurized fluid supply system
    • Patent number 5,533,334
    • Issue date Jul 9, 1996
    • Kabushiki Kaisha Komatsu Seisakusho
    • Masamitsu Takeuchi
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Operating valve device
    • Patent number 5,467,688
    • Issue date Nov 21, 1995
    • Kabushiki Kaisha Komatsu Seisakusho
    • Jun Maruyama
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic valve assembly
    • Patent number 5,372,060
    • Issue date Dec 13, 1994
    • Kabushiki Kaisha Komatsu Seisakusho
    • Jun Maruyama
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic pilot valve unit
    • Patent number 5,251,660
    • Issue date Oct 12, 1993
    • Kabushiki Kaisha Komatsu Seisakusho
    • Shyuji Hori
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Pilot valve
    • Patent number 5,184,646
    • Issue date Feb 9, 1993
    • Kabushiki Kaisha Komatsu Seisakusho
    • Shuji Hori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pressure control valve
    • Patent number 5,174,328
    • Issue date Dec 29, 1992
    • Kabushiki Kaisha Komatsu Seisakusho
    • Jun Maruyama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    ENGINE VALVE DEVICE
    • Publication number 20090199796
    • Publication date Aug 13, 2009
    • Komatsu Ltd.
    • Youhei Hisada
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    BEARING SEAL AND SWING DEVICE
    • Publication number 20090148089
    • Publication date Jun 11, 2009
    • Komatsu Ltd.
    • Hiroshi YAMAMOTO
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    BEARING SEAL AND SWING DEVICE
    • Publication number 20090146383
    • Publication date Jun 11, 2009
    • Komatsu Ltd.
    • Hiroshi YAMAMOTO
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Bearing Seal
    • Publication number 20080054573
    • Publication date Mar 6, 2008
    • KOMATSU LTD.
    • Hiroshi Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Bearing seal and swing device
    • Publication number 20060245674
    • Publication date Nov 2, 2006
    • Hiroshi Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Hydraulically driven type working machine
    • Publication number 20020062587
    • Publication date May 30, 2002
    • Komatsu Ltd.
    • Kenzo Kimoto
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING