Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11313477 | Ball valve with forced-sealing operation | Zhigang Liu, Xiaoqi Liu | 2022-04-26 |
| 11149826 | Planetary rolling micro-jacking device | — | 2021-10-19 |
| 10920893 | Cage reset planetary roller screw device | Xiaoqi Liu, Xiaoxuan Liu | 2021-02-16 |
| 10859169 | Valve seat driven forced seal ball valve | Xiaoqi Liu | 2020-12-08 |