Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6439465 | Encoding small amounts of embedded digital data at arbitrary locations within an image | — | 2002-08-27 |
| 6427920 | High frequency masking of embedded digital data to improve appearance | Robert Eugene Weltman | 2002-08-06 |