Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10977761 | Digital watermark embedding method and extraction method, digital watermark embedding apparatus and extraction apparatus, and digital watermark system | He Wang Zhong, Liang Sun, Zheng Qu, Da Yi Huang | 2021-04-13 |