Yukihiko Sugiyama

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic driving system of construction machinery
- Patent number 7,500,360
- Issue date Mar 10, 2009
- Hitachi Constuction Machinery Co., Ltd.
- Tsutomu Udagawa
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Control valve apparatus and pressure circuit
- Patent number 7,175,155
- Issue date Feb 13, 2007
- Hitachi Construction Machinery Co., Ltd.
- Kazuo Takiguchi
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Measurement and display of load of excavating blasted ground
- Patent number 6,122,598
- Issue date Sep 19, 2000
- Hitachi Construction Machinery Co., Ltd.
- Yasuo Tanaka
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Apparatus for diagnosing failure of hydraulic pump for work machine
- Patent number 6,055,851
- Issue date May 2, 2000
- Hitachi Construction Machinery Co., Ltd.
- Yasuo Tanaka
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
System for estimating residual service time of work vehicle
- Patent number 5,995,886
- Issue date Nov 30, 1999
- Hitachi Construction Machinery Co., Ltd.
- Yasuo Tanaka
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
CRAWLER BELT
- Publication number 20150158536
- Publication date Jun 11, 2015
- Hitachi Construction Machinery Co., Ltd.
- Toshikatsu Takagi
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
Control valve apparatus and pressure circuit
- Publication number 20050242310
- Publication date Nov 3, 2005
- Kazuo Takiguchi
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
Hydraulic driving system of construction machinery
- Publication number 20050175485
- Publication date Aug 11, 2005
- Tsutomu Udagawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING