Issued Patents 2023
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11821314 | Underground mining method for unexploited coal in boundary open-pit mine | Fuming Liu, Bo Chang | 2023-11-21 |
| 11795643 | Method for constructing inner dump type strip mine pit bottom reservoirs section by section | Liu HAN, Cangyan Xiao, Tao Shang | 2023-10-24 |
| 11673747 | Method for constructing pumping-injection well of groundwater reservoir in dump of open-pit mine | Quansheng Li, Zhiguo Cao, Liu HAN | 2023-06-13 |
| 11674393 | Method for constructing dam inside dump of inner-dump strip mine | Quansheng Li, Liu HAN, Cangyan Xiao | 2023-06-13 |