Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820063 | Controlling access to content based on certificates and access predicates | Paul England, John D. DeTreville | 2004-11-16 |
| 6788815 | System and method for accepting disparate types of user input | Charlton E. Lui, Charles P. Thacker, James E. Mathews, Leroy B. Keely, David A. Switzer +1 more | 2004-09-07 |
| 6775779 | Hierarchical trusted code for content protection in computers | Paul England | 2004-08-10 |