Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7967926 | UOE steel pipe excellent in collapse strength and method of production thereof | Hitoshi Asahi | 2011-06-28 |
| 7892368 | UOE steel pipe excellent in collapse strength and method of production thereof | Hitoshi Asahi | 2011-02-22 |