Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11506225 | Vacuum breaking device for vacuum generator | Dongjie ZHU, Guangjing CHEN, Xiaoxiong Hu | 2022-11-22 |
| 10887311 | Method and apparatus for requesting usage permission, and method and apparatus for acquiring usage permission | Cong Li, Ying-Chieh Lai, Chuntao XIAO | 2021-01-05 |
| 10012080 | Skip-mining type wangeviry stope branch roadway filling and coal mining method | Liqiang Ma, Xiaomin Yu, Yinzhong Zhang, Jiaxue Wang, Junjie Wang +4 more | 2018-07-03 |