Issued Patents 2025
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12416237 | Methods for grout injection repair and water retention in goaf | Yifan Zeng, Hao Li, Qiang Wu, Donghui Yang, Aoshuang Mei +1 more | 2025-09-16 |
| 12312958 | Method of segmented grouting for repairing aquifers in mining area | Yifan Zeng, Qiang Wu, Xinjiang Wei, Kai Pang, Xuan Xiao +1 more | 2025-05-27 |
| 12196076 | Grouting and water blocking method for directional hole with large offset in hard rock stratum | Yifan Zeng, Qiang Wu, Xinjiang Wei, Xuejun Wang, Kai Pang +2 more | 2025-01-14 |