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Mitsuo Sonoda
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Tsuchiura, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Device for controlling construction machinery
Patent number
9,671,763
Issue date
Jun 6, 2017
Hitachi Construction Machinery Co., Ltd.
Shinji Ishihara
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Hydraulic working machine
Patent number
9,399,856
Issue date
Jul 26, 2016
Hitachi Construction Machinery Co., Ltd.
Kazuo Fujishima
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Rotation control device of working machine
Patent number
9,103,093
Issue date
Aug 11, 2015
Hitachi Construction Machinery Co., Ltd.
Tsutomu Udagawa
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Hybrid construction machine
Patent number
9,065,361
Issue date
Jun 23, 2015
Hitachi Construction Machinery Co., Ltd.
Shinji Ishihara
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Motive power regeneration system for working machine
Patent number
8,659,177
Issue date
Feb 25, 2014
Hitachi Construction Machinery Co., Ltd.
Kazuo Fujishima
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Operation control device for three-joint excavator
Patent number
6,101,437
Issue date
Aug 8, 2000
Morio Oshina
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Operation control device for three-joint type excavator
Patent number
6,079,131
Issue date
Jun 27, 2000
Hitachi Construction Machinery Co., Ltd.
Morio Oshina
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Hydraulic driving circuit with motor displacement limitation control
Patent number
5,203,168
Issue date
Apr 20, 1993
Hitachi Construction Machinery Co., Ltd.
Morio Oshina
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Hydraulic drive system
Patent number
5,003,776
Issue date
Apr 2, 1991
Hitachi Construction Machinery Co., Ltd.
Takashi Kanai
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Hydraulic drive circuit system
Patent number
4,846,046
Issue date
Jul 11, 1989
Hitachi Construction Machinery Co., Ltd.
Takashi Kanai
B60 - VEHICLES IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
DEVICE FOR CONTROLLING CONSTRUCTION MACHINERY
Publication number
20140371915
Publication date
Dec 18, 2014
Shinji Ishihara
B60 - VEHICLES IN GENERAL
Information
Patent Application
Rotation Control Device of Working Machine
Publication number
20140032059
Publication date
Jan 30, 2014
Hitachi Construction Machinery Co., Ltd.
Tsutomu Udagawa
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
HYDRAULIC WORKING MACHINE
Publication number
20140020375
Publication date
Jan 23, 2014
Hitachi Construction Machinery Co., Ltd.
Kazuo Fujishima
B60 - VEHICLES IN GENERAL
Information
Patent Application
MOTIVE POWER REGENERATION SYSTEM FOR WORKING MACHINE
Publication number
20130300128
Publication date
Nov 14, 2013
Hitachi Construction Machinery Co., Ltd.
Kazuo Fujishima
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
HYBRID CONSTRUCTION MACHINE
Publication number
20130193892
Publication date
Aug 1, 2013
Shinji Ishihara
B60 - VEHICLES IN GENERAL