Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10427914 | Elevator synchronous door knife | Xiaobo ZHANG, QingXi Cai, Chong Chen | 2019-10-01 |
| 10040669 | Asynchronous door knife of elevator integrated car door lock | Xiaobo ZHANG, QingXi Cai, Minchao Chen, Senyuan Qiao | 2018-08-07 |