Issued Patents 2025
Showing 1–2 of 2 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 | Bangtang Yin, Kai-Ten Feng, Baojiang Sun, Zhiyuan Wang, Hao Li +2 more | 2025-06-17 |
| 12221139 | Box underframe end structure of railway vehicle | Ming Li, Rui Deng, Fei Xiao, Shixi OU, Yingbo LIU +1 more | 2025-02-11 |