Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12352169 | Hydraulic support with quick response function for coal wall spalling | Xiaoqi Ma, Qingliang Zeng, Zhiyuan Sun, Wenqian Xu, Zhaoji Li +2 more | 2025-07-08 |
| 11913479 | Impact-resistant balanced hydro-cylinder with pressure relief and buffering protection | Xuehui Yu, Dejian Ma, Jiantao Wang, Fengwen Xin, Zhaoji Li +2 more | 2024-02-27 |