TREA

Hidekazu OKA

Follow

Person

  • Hiroshima-shi, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic drive apparatus for construction machine
    • Patent number 10,280,589
    • Issue date May 7, 2019
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Construction machine with working attachment
    • Patent number 9,394,666
    • Issue date Jul 19, 2016
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic drive device and working machine with the same
    • Patent number 8,336,305
    • Issue date Dec 25, 2012
    • Kobelco Construction Machinery Co., Ltd.
    • Yuuji Matsuura
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic circuit of construction machine
    • Patent number 7,878,770
    • Issue date Feb 1, 2011
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic control apparatus of working machine
    • Patent number 7,610,755
    • Issue date Nov 3, 2009
    • Kobelco Construction Machinery Co., Ltd.
    • Etsujiro Imanishi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic control device for working machine
    • Patent number 7,594,395
    • Issue date Sep 29, 2009
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic controller for working machine
    • Patent number 7,513,109
    • Issue date Apr 7, 2009
    • Kobelco Construction Machinery Co., Ltd.
    • Yutaka Toji
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic control apparatus for hydraulic excavator
    • Patent number 7,499,783
    • Issue date Mar 3, 2009
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic control system for working machine
    • Patent number 7,284,371
    • Issue date Oct 23, 2007
    • Kobelco Construction Machinery Co., Ltd.
    • Yutaka Toji
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic control system for hydraulic excavator
    • Patent number 7,178,333
    • Issue date Feb 20, 2007
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hydraulic control system and construction machine
    • Patent number 7,174,711
    • Issue date Feb 13, 2007
    • Kobelco Construction Machinery Co., Ltd.
    • Takao Nanjo
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic control device for working machine
    • Patent number 7,168,246
    • Issue date Jan 30, 2007
    • Kobelco Construction Machinery Co., Ltd.
    • Yutaka Toji
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic valve device and method for assembling the same
    • Patent number 7,131,453
    • Issue date Nov 7, 2006
    • Kobelco Construction Machinery Co., Ltd.
    • Yutaka Toji
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic controller for construction machine
    • Patent number 7,059,125
    • Issue date Jun 13, 2006
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Control system and method for hydraulic working machine
    • Patent number 6,837,140
    • Issue date Jan 4, 2005
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Hydraulic system for construction machine
    • Patent number 6,708,490
    • Issue date Mar 23, 2004
    • Kobelco Construction Machinery Co., Ltd.
    • Yutaka Toji
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Traveling control device
    • Patent number 6,688,102
    • Issue date Feb 10, 2004
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Construction machine
    • Patent number 6,655,135
    • Issue date Dec 2, 2003
    • Kobelco Construction Machinery Co., Ltd.
    • Hidekazu Oka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    HYDRAULIC DRIVE APPARATUS FOR CONSTRUCTION MACHINE
    • Publication number 20170058486
    • Publication date Mar 2, 2017
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu OKA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    CONSTRUCTION MACHINE WITH WORKING ATTACHMENT
    • Publication number 20130330160
    • Publication date Dec 12, 2013
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu OKA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC DRIVE DEVICE AND WORKING MACHINE WITH THE SAME
    • Publication number 20100089049
    • Publication date Apr 15, 2010
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Yuuji Matsuura
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC CONTROL SYSTEM FOR WORKING MACHINE
    • Publication number 20080017022
    • Publication date Jan 24, 2008
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Yutaka Toji
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC CONTROL APPARATUS OF WORKING MACHINE
    • Publication number 20070204606
    • Publication date Sep 6, 2007
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Etsujiro Imanishi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYDRAULIC CIRCUIT OF CONSTRUCTION MACHINE
    • Publication number 20070204607
    • Publication date Sep 6, 2007
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu OKA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC CONTROL DEVICE FOR WORKING MACHINE
    • Publication number 20070169474
    • Publication date Jul 26, 2007
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu OKA
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    HYDRAULIC CONTROLLER FOR WORKING MACHINE
    • Publication number 20070062185
    • Publication date Mar 22, 2007
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Yutaka TOJI
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYDRAULIC CONTROL APPARATUS FOR HYDRAULIC EXCAVATOR
    • Publication number 20070016349
    • Publication date Jan 18, 2007
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu OKA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Working machine
    • Publication number 20060265915
    • Publication date Nov 30, 2006
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Yutaka Toji
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic control system and construction machine
    • Publication number 20050229594
    • Publication date Oct 20, 2005
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Takao Nanjo
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic control device for working machine
    • Publication number 20050204736
    • Publication date Sep 22, 2005
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Yutaka Toji
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic control system for working machine
    • Publication number 20050204912
    • Publication date Sep 22, 2005
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Yutaka Toji
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic control system for hydraulic excavator
    • Publication number 20050204734
    • Publication date Sep 22, 2005
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu Oka
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic controller for construction machine
    • Publication number 20050060993
    • Publication date Mar 24, 2005
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu Oka
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic valve device and method for assembling the same
    • Publication number 20040211471
    • Publication date Oct 28, 2004
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Yutaka Toji
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    Control system and method for hydraulic working machine
    • Publication number 20030145721
    • Publication date Aug 7, 2003
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu Oka
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hydraulic system for construction machine
    • Publication number 20030037465
    • Publication date Feb 27, 2003
    • KOBELCO CONSTRUCTION MACHINERY CO. LTD.,
    • Yutaka Toji
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Construction machine
    • Publication number 20020184881
    • Publication date Dec 12, 2002
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu Oka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Traveling control device
    • Publication number 20020133280
    • Publication date Sep 19, 2002
    • KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    • Hidekazu Oka
    • B60 - VEHICLES IN GENERAL