Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11085279 | Stress-transfer method in tunnel with high ground pressure based on fracturing ring | Jiangwei Liu, Xinglong ZHAO, Shuliang Chen | 2021-08-10 |
| 10941641 | Long-distance drilling and hydrofracturing integrated device and method in underground mine | Haoze Li, Shuliang Chen | 2021-03-09 |