Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832319 | Content guard system for copy protection of recordable media | Alan E. Bell, Chandler Brendan Stanton Traw | 2004-12-14 |
| 6748539 | System and method for securely checking in and checking out digitized content | — | 2004-06-08 |
| 6738878 | Verifying the integrity of a media key block by storing validation data in the cutting area of media | Michael Ripley, Atsushi Ishihara, Taku Kato, Yoshihisa Fukushima | 2004-05-18 |