Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6665418 | Linear projective data embedding | — | 2003-12-16 |
| 6624874 | Apparatus and method for inserting an updateable hidden image into an optical path | Joseph F. Revelli, Jr., Paul W. Jones, Lawrence A. Ray | 2003-09-23 |
| 6567532 | Method and computer program for extracting an embedded message from a digital image | — | 2003-05-20 |
| 6536665 | Method and apparatus for transaction card security utilizing embedded image data | Lawrence A. Ray | 2003-03-25 |