Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11946334 | Flow splitting device for gas reverse circulation drilling | Chuanwei Zhao, Zhonghua WU, Honglin Tang, Zhihe LIU, Xueliang PEI +7 more | 2024-04-02 |
| 10253568 | Push-the-bit rotary guiding device and application method thereof | Hongbing Xiao, Jinzhou Yang, Laiju Han, Zuohui Li, Haihua Zhang +1 more | 2019-04-09 |
| 9938445 | Comb polymer, method of preparing the same, and use thereof | Gongrang Li, Qiang Lan, Peng Zhang, Chengsheng Zheng, Yunbo Xu +3 more | 2018-04-10 |