Yujirou Kobayashi

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Hitachi-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Reversible rolling method and reversible rolling system
- Patent number 6,305,206
- Issue date Oct 23, 2001
- Hitachi, Ltd.
- Yujirou Kobayashi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Cluster type rolling mill and rolling method
- Patent number 6,151,945
- Issue date Nov 28, 2000
- Hitachi, Ltd.
- Yasutsugu Yoshimura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Cold rolling mill and a rolling method
- Publication number 20030015010
- Publication date Jan 23, 2003
- Hitachi, Ltd.
- Yujirou Kobayashi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Cold rolling mill and a rolling method
- Publication number 20020043087
- Publication date Apr 18, 2002
- Hitachi, Ltd.
- Yujirou Kobayashi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...