Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12235212 | Precious stone testing apparatus and method thereof | Xiuling Zhu | 2025-02-25 |
| 12130238 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2024-10-29 |
| 11243170 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2022-02-08 |
| 11073482 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2021-07-27 |
| 10539510 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2020-01-21 |
| 10244840 | Jewelry storage device and display method thereof | Xiu Ling Zhu | 2019-04-02 |
| 10203288 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2019-02-12 |
| 10203317 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2019-02-12 |
| D816993 | Jewelry box | Xiuling Zhu | 2018-05-08 |
| D788462 | Jewelry box | Xiu Ling Zhu | 2017-06-06 |
| 9453808 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2016-09-27 |
| D732987 | Precious stone testing apparatus | Xiu Ling Zhu | 2015-06-30 |
| 8947111 | Multi-functional precious stone testing apparatus and method thereof | Xiuling Zhu | 2015-02-03 |