Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10858917 | Expandable liner hanger | Quanli Zhang, Hongwei Yin, Wanjun Li, Huijuan Guo, Guojun Liu +11 more | 2020-12-08 |
| 10641067 | Mechanical and hydraulic dual-effect expansion device for well drilling with expandable tubular technology | Binggui Xu, Hongwei Yin, Huijuan Guo, Mingjie Lv, Jianli Wang +6 more | 2020-05-05 |