Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11891680 | Steel material suitable for use in sour environment | Yohei Otome, Hiroki Kamitani, Atsushi Soma, Nobuaki Komatsubara, Yuji Arai +1 more | 2024-02-06 |
| 11066718 | Method of manufacturing stainless pipe for oil wells and stainless steel pipe for oil wells | Hiroki Kamitani | 2021-07-20 |
| 10487373 | Steel pipe for line pipe and method of manufacturing the same | Keiichi Kondo, Hiroki Kamitani, Yuji Arai | 2019-11-26 |