Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12312958 | Method of segmented grouting for repairing aquifers in mining area | Yifan Zeng, Weihong Yang, Qiang Wu, Xinjiang Wei, Kai Pang +1 more | 2025-05-27 |
| 12196076 | Grouting and water blocking method for directional hole with large offset in hard rock stratum | Yifan Zeng, Weihong Yang, Qiang Wu, Xinjiang Wei, Xuejun Wang +2 more | 2025-01-14 |
| 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 |
| 12055040 | Directional drilling device and drilling method of aquifer remediation of coal seam roof | Yifan Zeng, Weihong Yang, Qiang Wu, Xuan Xiao, Kai Pang +2 more | 2024-08-06 |
| 11781429 | Method for blocking mine water inrush | Yifan Zeng, Qiang Wu, Weihong Yang, Zhaolai Hua, Yanping Miao +7 more | 2023-10-10 |
| 9941650 | Rotating mechanism and plug using same | Li-Wen Tien, Run-Sun Zeng | 2018-04-10 |
| 9716329 | Rotation element and safety plug with the rotation element | Li-Wen Tien, Run-Sun Zeng | 2017-07-25 |