Issued Patents 2025
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12331602 | Well-killing system for ultra-deep well drilling with co-existence of overflow and lost circulation and operation method thereof | Kai-Ten Feng, Baojiang Sun, Zhiyuan Wang, Yonghai Gao, Hao Li +2 more | 2025-06-17 |