Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12371765 | Seamless steel pipe suitable for use in sour environment | Seiya OKADA, Hiroki Kamitani, Yusaku Tomio, Shohei Ikeda, Naoya Shirasawa | 2025-07-29 |
| 11905580 | Seamless steel pipe suitable for use in sour environment | Hiroki Kamitani, Seiya OKADA, Atsushi Soma, Yuji Arai, Shinji Yoshida | 2024-02-20 |
| 11891680 | Steel material suitable for use in sour environment | Yohei Otome, Hiroki Kamitani, Atsushi Soma, Taro OE, Yuji Arai +1 more | 2024-02-06 |