Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11081837 | Multi core plug in electrical connection structure for logging while drilling tools | Qingyun Di | 2021-08-03 |
| 11047226 | Fluid pressure measuring device for measurement-while-drilling tool | Jiansheng Du, Qingyun Di, Zili Wang, Wenxuan Chen, Yongyou Yang | 2021-06-29 |
| 11021911 | Rotary guiding device based on radial driving force | Qingbo Liu, Qingyun Di, Tsili Wang, Wenxuan Chen, Jiansheng Du +3 more | 2021-06-01 |