Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11885387 | Friction material and preparation method therefor, and friction part | Guochen Gao | 2024-01-30 |
| 11702321 | Traction machine assembly and elevator | Guochen Gao, Fengkun Zhu | 2023-07-18 |
| 10974930 | Traction sheave, pulley component and elevator having same | — | 2021-04-13 |
| 10975927 | Brake device for elevator and an elevator system | Zixu Zhang, Guochen Gao | 2021-04-13 |