Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8640337 | Pipe expansion method | Yoichi Iwamoto, Hisanori Watanabe | 2014-02-04 |
| 8637784 | Method for improving residual stress in tubular body | Takahiro Ota, Kazuhiko Kamo, Seiji Asada, Kazuhiro Wakabayashi, Koji Okimura +1 more | 2014-01-28 |