Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10794174 | Dynamically self-balancing pressurized borehole-sealing apparatus and method thereof for coal seam gas pressure measurement | Wei Lu, Zhen Liu, Guansheng Qi, Jinliang Li, Dongling Sun +2 more | 2020-10-06 |
| 10774591 | Drill-power-based directional hydraulic fracturing system for downhole quick slotting and method thereof | Gang Wang, Xiaohua Zhou, Lulu SUN, Chenghao Jiang, Zhen Liu | 2020-09-15 |