Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12428698 | Abrasion-resistant steel plate and method of producing abrasion-resistant steel plate | Shigeki Kitsuya, Tomoyuki Yokota | 2025-09-30 |
| 9181609 | Welded steel pipe for linepipe having high compressive strength and excellent sour gas resistance and manufacturing method thereof | Nobuyuki Ishikawa, Akihiko Tanizawa, Masayuki Horie, Yasumitsu Kiyoto, 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, Masayuki Horie, Yasumitsu Kiyoto | 2015-07-28 |