Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12416237 | Methods for grout injection repair and water retention in goaf | Yifan Zeng, Hao Li, Qiang Wu, Weihong Yang, Donghui Yang +1 more | 2025-09-16 |
| 12140025 | Directional drilling method for branching borehole with short radius and system | Yifan Zeng, Weihong Yang, Qiang Wu, Xuan Xiao, Kai Pang +4 more | 2024-11-12 |
| 12129620 | Method for repairing aquifer in coal mine area | Yifan Zeng, Weihong Yang, Qiang Wu, Kai Pang, Xinjiang Wei +4 more | 2024-10-29 |
| 12091972 | Method and device for determining development status of separation layer of coal mine | Yifan Zeng, Qiang Wu, Huaming Wei, Yashuai Cui, Shihao Meng +4 more | 2024-09-17 |
| 11781429 | Method for blocking mine water inrush | Yifan Zeng, Qiang Wu, Weihong Yang, Zhaolai Hua, Yanping Miao +7 more | 2023-10-10 |
| 11459849 | Filling bag and sealing method for drilled hole for detection in three zones of overburden | Yifan Zeng, Qiang Wu, Zhaolai Hua, Rui Wang, Zhenzhong Pang +4 more | 2022-10-04 |