Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11396777 | Rotary steering drilling apparatus | Qijun Xie, Qingyun Di, Yongyou Yang, Linfeng Hong, Xiangyang Wang | 2022-07-26 |
| 11306539 | Executing mechanism for rotary guide device and rotary guide device | Qingyun Di, Yongyou Yang, Xiangyang Wang, Qijun Xie | 2022-04-19 |
| 11306540 | Push type rotary guide drilling system | Qingyun Di, Xiangyang Wang, Yongyou Yang, Qijun Xie, Xinzhen He | 2022-04-19 |