Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8939004 | Method for adjusting rolling positions of rolling rolls constituting three-roll mandrel mill and method for manufacturing seamless pipes or tubes | Akihito Yamane | 2015-01-27 |
| 7686897 | Martensitic stainless steel seamless pipe and a manufacturing method thereof | Mutsumi Tanida | 2010-03-30 |
| 6692592 | Method for manufacturing high chromium system seamless steel pipe | Koichi Ikeda, Toshiharu Abe | 2004-02-17 |