Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9181609 | Welded steel pipe for linepipe having high compressive strength and excellent sour gas resistance and manufacturing method thereof | Nobuyuki Ishikawa, Akihiko Tanizawa, Hitoshi Sueyoshi, Masayuki Horie, Nobuo Shikanai | 2015-11-10 |
| 9089919 | Welded steel pipe for linepipe with high compressive strength and manufacturing method thereof | Kimihiro Nishimura, Nobuyuki Ishikawa, Akihiko Tanizawa, Hitoshi Sueyoshi, Masayuki Horie | 2015-07-28 |