Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10180064 | System for sampling from formation while drilling | Yongren Feng, Zhongli Bao, Qiang Yu, Guiqing Hao, Zichao Ii +1 more | 2019-01-15 |
| 9982816 | Pup joint for releasing sidewall contact of stratigraphic test device and apparatus | Xiaofei Qin, Yongren Feng, Xiaodong Chu, Lei Wang | 2018-05-29 |