Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11143006 | Fracturing device | Peng Zhang, Rikui Zhang, Liang LV, Xiaolei Ji, Chunqiang Lan +2 more | 2021-10-12 |
| 10989019 | Fully-electrically driven downhole safety valve | Baoping Cai, Yonghong Liu, Chuntan Gao, Chaoyang Sheng, Peng Liu +9 more | 2021-04-27 |