Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12345336 | Piston ring with hard plating, and preparation method therefor | Kaishun Li, Qianxi Liu, Guanfei Shi | 2025-07-01 |
| 11215283 | Diamond-like coating for piston ring surfaces, piston ring and processes for preparing the same | Yingxue Wu, Qianxi Liu, Bo Zhang | 2022-01-04 |
| 7325015 | Configuring a computer application with preconfigured business content | Qi Zhou, Song Chi, Yufeng Zheng | 2008-01-29 |