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Kuniaki Yoshida
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Tsuchiura, JP
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last 30 patents
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Patent Grant
Hydraulic driving method of and hydraulic driving apparatus for hyd...
Patent number
5,074,194
Issue date
Dec 24, 1991
Hitachi Construction Machinery Co., Ltd.
Toichi Hirata
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Control system for load-sensing hydraulic drive circuit
Patent number
4,967,557
Issue date
Nov 6, 1990
Hitachi Construction Machinery Co., Ltd.
Eiki Izumi
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Drive control system for hydraulic machine
Patent number
4,881,450
Issue date
Nov 21, 1989
Hitachi Construction Machinery Co., Ltd.
Toichi Hirata
G05 - CONTROLLING REGULATING
Information
Patent Grant
Brake circuit apparatus for hydraulic motor
Patent number
4,729,222
Issue date
Mar 8, 1988
Hitachi Construction Machinery Co., Ltd.
Hideaki Tanaka
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Control system for hydraulically-operated construction machinery
Patent number
4,697,418
Issue date
Oct 6, 1987
Hitachi Construction Machinery Co., Ltd.
Nobuya Okabe
B60 - VEHICLES IN GENERAL