Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11535104 | Train and train power supply control method | Yang Hu, Wenchao Fu, Lei Liu, Yongmei Fan, Chunxing Pei +6 more | 2022-12-27 |
| 11313192 | Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof | Xianwen Li, Qiaorong Han, Yanming Zhang, Xu Ma, Zhanguo Ma +25 more | 2022-04-26 |