Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12037666 | Steel material for line pipes, method for producing the same, and method for producing line pipe | Kyono Yasuda, Tomoyuki Yokota, Ryuji Muraoka, Kazukuni Hase | 2024-07-16 |
| 11401568 | Steel material for line pipes, method for producing the same, and method for producing line pipe | Kyono Yasuda, Tomoyuki Yokota, Ryuji Muraoka, Kazukuni Hase | 2022-08-02 |
| 9181609 | Welded steel pipe for linepipe having high compressive strength and excellent sour gas resistance and manufacturing method thereof | Nobuyuki Ishikawa, Hitoshi Sueyoshi, 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, Hitoshi Sueyoshi, Masayuki Horie, Yasumitsu Kiyoto | 2015-07-28 |