Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12371765 | Seamless steel pipe suitable for use in sour environment | Hiroki Kamitani, Nobuaki Komatsubara, Yusaku Tomio, Shohei Ikeda, Naoya Shirasawa | 2025-07-29 |
| 11905580 | Seamless steel pipe suitable for use in sour environment | Hiroki Kamitani, Nobuaki Komatsubara, Atsushi Soma, Yuji Arai, Shinji Yoshida | 2024-02-20 |
| 11898216 | Seamless steel pipe heat-treatment-finishing-treatment continuous facility | Hiroki Kamitani, Takanori Tanaka, Atsushi Soma, Keiichi Kondo, Hideki MITSUNARI +3 more | 2024-02-13 |
| 11174539 | Steel material suitable for use in sour environment | Hiroki Kamitani, Atsushi Soma, Shinji Yoshida, Yuji Arai | 2021-11-16 |