Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817535 | Usage dependent ticket to protect copy-protected material | — | 2004-11-16 |
| 6789188 | Methods and apparatus for secure content distribution | Martin Rosner, Toine A. M. Staring | 2004-09-07 |
| 6755346 | Usage dependent ticket to protect copy-protected material | — | 2004-06-29 |
| 6748531 | Method and apparatus for confirming and revoking trust in a multi-level content distribution system | — | 2004-06-08 |
| 6694025 | Method and apparatus for secure distribution of public/private key pairs | Michael S. Pasieka | 2004-02-17 |