Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8021502 | Method for producing martensitic stainless steel pipe | Nobuyuki Mori, Keiichi Nakamura | 2011-09-20 |
| 7877159 | Method and apparatus for managing production history information of pipe or tube and method for producing pipe or tube therewith | — | 2011-01-25 |