Ryo Obara

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Niigata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Oil ring for internal combustion engine
- Patent number 9,353,864
- Issue date May 31, 2016
- Kabushiki Kaisha Riken
- Yunzhi Gao
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
OIL RING FOR INTERNAL COMBUSTION ENGINE
- Publication number 20120235359
- Publication date Sep 20, 2012
- Yunzhi Gao
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...