Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10493788 | Optical security device with full parallax diffraction optical variable image | Xiaoli Wang, Chengyao Li, Jun Zhu | 2019-12-03 |
| 10308062 | Optical anti-counterfeiting element and optical anti-counterfeiting product utilizing the same | Jun Zhu, Baoli Zhang, Zhongdong Ye, Chunhua Hu | 2019-06-04 |