Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10696311 | Full side openable boxcar | Lianhua Lou, Haishuang Sun, Fenghui Yu, Haizeng Tian, Qian Lv +3 more | 2020-06-30 |
| 10352083 | Compartment and bottom door thereof | Lei Yu, Yong Fu, Tianjun Zhao, Shuang Yang | 2019-07-16 |
| 9061688 | Bottom door device and hopper car having the same | Linghan Yue, Shuang Yang, Baichuan He, Lei Yu, Zhigang Li +2 more | 2015-06-23 |
| 8950340 | Ballast hopper car discharge door control system | Yong Fu, Linghan Yue, Yongfeng Yi, Junlin Zhang | 2015-02-10 |