Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6748533 | Method and apparatus for protecting the legitimacy of an article | Jiankang Wu, Qibin Sun | 2004-06-08 |
| 6711553 | Method and apparatus for digital content copy protection | Yong Wu | 2004-03-23 |
| 6678389 | Method and apparatus for embedding digital information in digital multimedia data | Qibin Sun, Jiankang Wu | 2004-01-13 |