Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6868405 | Copy detection for digitally-formatted works | — | 2005-03-15 |
| 6820063 | Controlling access to content based on certificates and access predicates | Paul England, Butler W. Lampson | 2004-11-16 |
| 6745306 | Method and system for restricting the load of physical address translations of virtual addresses | Bryan Willman, Paul England | 2004-06-01 |
| 6609199 | Method and apparatus for authenticating an open system application to a portable IC device | — | 2003-08-19 |
| 6330670 | Digital rights management operating system | Paul England, Butler W. Lampson | 2001-12-11 |
| 6327652 | Loading and identifying a digital rights management operating system | Paul England, Butler W. Lampson | 2001-12-04 |
| 6131150 | Scaled memory allocation system | — | 2000-10-10 |
| 6078740 | Item selection by prediction and refinement | — | 2000-06-20 |