Issued Patents All Time
Showing 1–24 of 24 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 |
| 12140025 | Directional drilling method for branching borehole with short radius and system | Yifan Zeng, Qiang Wu, Xuan Xiao, Kai Pang, Xinjiang Wei +4 more | 2024-11-12 |
| 12129620 | Method for repairing aquifer in coal mine area | Yifan Zeng, Qiang Wu, Kai Pang, Xinjiang Wei, Xue Liu +4 more | 2024-10-29 |
| 12091972 | Method and device for determining development status of separation layer of coal mine | Yifan Zeng, Aoshuang Mei, Qiang Wu, Huaming Wei, Yashuai Cui +4 more | 2024-09-17 |
| 12055040 | Directional drilling device and drilling method of aquifer remediation of coal seam roof | Yifan Zeng, Qiang Wu, Xuan Xiao, Kai Pang, Xinjiang Wei +2 more | 2024-08-06 |
| D1006479 | Garbage bag dispenser | — | 2023-12-05 |
| 11781429 | Method for blocking mine water inrush | Yifan Zeng, Qiang Wu, Zhaolai Hua, Yanping Miao, Lu Wang +7 more | 2023-10-10 |
| D997322 | Portable integrated firewood stove with oven | — | 2023-08-29 |
| D971629 | Bag cartridge | — | 2022-12-06 |
| D967111 | Tablet case | — | 2022-10-18 |
| D952391 | Stove | — | 2022-05-24 |
| D950298 | Stove | — | 2022-05-03 |
| D922207 | Garbage bag with elastic rope | — | 2021-06-15 |
| D916484 | Packing box for trash bag | — | 2021-04-20 |
| D904067 | Packing box for trash bag | — | 2020-12-08 |
| 9886975 | Hard disk drive and pivot assembly bearing device | Daiki Kobayashi | 2018-02-06 |
| 9493950 | Composite I-beam member | — | 2016-11-15 |
| 9376797 | Bolted steel connections with 3-D jacket plates and tension rods | — | 2016-06-28 |
| 8910455 | Composite I-beam member | — | 2014-12-16 |
| 8820033 | Steel and wood composite structure with metal jacket wood studs and rods | — | 2014-09-02 |
| 8800239 | Bolted steel connections with 3-D jacket plates and tension rods | — | 2014-08-12 |
| 8300355 | Fluid dynamic bearing, spindle motor having the fluid dynamic bearing, and storage apparatus having the spindle motor | — | 2012-10-30 |