Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7959745 | High-strength steel pipe of API X65 grade or higher | Nobuyuki Ishikawa, Shigeru Endo, Minoru Suwa | 2011-06-14 |
| 7935197 | High strength steel plate | Nobuyuki Ishikawa, Minoru Suwa, Shigeru Endo | 2011-05-03 |