Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11718563 | Polymer cement-granite composite tomb box and method for making same | — | 2023-08-08 |
| 10023006 | Wheel rim retainer | Yingjie Qi | 2018-07-17 |
| 9731548 | Wheel rim retainer | Yingjie Qi | 2017-08-15 |