Masami Yamaguchi

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hollow power transmission shaft and method of manufacturing the same
- Patent number 8,101,031
- Issue date Jan 24, 2012
- NTN Corporation
- Katsuhiro Sakurai
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
HOLLOW POWER TRANSMISSION SHAFT AND METHOD OF MANUFACTURING THE SAME
- Publication number 20090082117
- Publication date Mar 26, 2009
- Katsuhiro Sakurai
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...