Jun OKAMURA

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Kasumigaura-shi, Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic drive device for working machine
- Patent number 10,907,323
- Issue date Feb 2, 2021
- Hitachi Construction Machinery Co., Ltd.
- Yoshifumi Takimoto
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Pressure reducing valve unit
- Patent number 10,443,746
- Issue date Oct 15, 2019
- Hitachi Construction Machinery Co., Ltd.
- Jun Okamura
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Information Patent Application
Hydraulic Drive Device for Working Machine
- Publication number 20210047803
- Publication date Feb 18, 2021
- Hitachi Construction Machinery Co., Ltd.
- Yoshifumi TAKIMOTO
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Pressure Reducing Valve Unit
- Publication number 20180245700
- Publication date Aug 30, 2018
- Hitachi Construction Machinery Co., Ltd.
- Jun OKAMURA
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...