Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11401598 | Friction reduced and wear resistant coating, preparation method thereof and piston ring | Bo Zhang, Kaishun Li | 2022-08-02 |
| 11215283 | Diamond-like coating for piston ring surfaces, piston ring and processes for preparing the same | Yingxue Wu, Yueting Zhou, Bo Zhang | 2022-01-04 |