Tokitsugu Shirakawa

Follow

Person

Himeji-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Surface treated steel sheet with less environmental impact for elec...
- Patent number 6,818,322
- Issue date Nov 16, 2004
- Nippon Steel Corporation
- Ryoichi Yoshihara
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Environmentally friendly surface treated steel sheet for electronic...
- Publication number 20040072012
- Publication date Apr 15, 2004
- Ryoichi Yoshihara
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR