Yuitirou Ono

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Patents Grantslast 30 patents

Information Patent Grant
Helical compression spring and method for manufacturing same
- Patent number 9,752,636
- Issue date Sep 5, 2017
- NHK Spring Co., Ltd.
- Yuitirou Ono
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
HELICAL COMPRESSION SPRING AND METHOD FOR MANUFACTURING SAME
- Publication number 20150252863
- Publication date Sep 10, 2015
- NHK Spring Co., Ltd.
- Yuitirou Ono
- C21 - METALLURGY OF IRON