Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12345336 | Piston ring with hard plating, and preparation method therefor | Qianxi Liu, Yueting Zhou, Guanfei Shi | 2025-07-01 |
| 11401598 | Friction reduced and wear resistant coating, preparation method thereof and piston ring | Qianxi Liu, Bo Zhang | 2022-08-02 |