Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6989484 | Controlling sharing of files by portable devices | — | 2006-01-24 |
| 6839846 | Embedding digital signatures into digital payloads | Richard P. Mangold, Edward B. Shin | 2005-01-04 |
| 6802003 | Method and apparatus for authenticating content | David M. Barth, Richard P. Mangold | 2004-10-05 |
| 6802004 | Method and apparatus for authenticating content in a portable device | David M. Barth, Richard P. Mangold | 2004-10-05 |
| 6782446 | Method to prevent corruption of page tables during flash EEPROM programming | David W. Akey | 2004-08-24 |
| 6372974 | Method and apparatus for sharing music content between devices | Robert Jacobs | 2002-04-16 |
| 6192375 | Method and apparatus for managing files in a storage medium | — | 2001-02-20 |