Shota Iwakura

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for forming a non-circular pipe
- Patent number 5,735,156
- Issue date Apr 7, 1998
- Hitachi, Ltd.
- Yuji Yoshitomi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of relieving residual stress in metal pipe
- Patent number 4,730,474
- Issue date Mar 15, 1988
- Hitachi, Ltd.
- Shota Iwakura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...