SUMIHATSU CO., LTD.

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel for spring, and method for producing spring
- Patent number 10,041,160
- Issue date Aug 7, 2018
- JFE Steel Corporation
- Minoru Honjo
- C21 - METALLURGY OF IRON

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Patents Applicationslast 30 patents

Information Patent Application
STEEL FOR SPRING, AND METHOD FOR PRODUCING SPRING
- Publication number 20160222497
- Publication date Aug 4, 2016
- JFE STEEL CORPORATION
- Minoru HONJO
- C21 - METALLURGY OF IRON