Issued Patents All Time
Showing 1–1 of 1 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 |
Showing 1–1 of 1 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 |