Kazuhiro Sunamura

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Interference prevention system for two-piece boom type hydraulic ex...
- Patent number 6,230,090
- Issue date May 8, 2001
- Hitachi Construction Machinery Co., Ltd.
- Ei Takahashi
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Burglarproof device for hydraulic machine
- Patent number 5,632,190
- Issue date May 27, 1997
- Hitachi Construction Machinery Co., Ltd.
- Kazuhiro Sunamura
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Drive control system for hydraulic machine
- Patent number 5,497,805
- Issue date Mar 12, 1996
- Hitachi Construction Machinery Co., Ltd.
- Kazuhiro Sunamura
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Anti-vibration apparatus in a hydraulic system for boom cylinder of...
- Patent number 5,048,296
- Issue date Sep 17, 1991
- Hitachi Construction Co., Ltd.
- Kazuhiro Sunamura
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING