Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8275951 | Local bitmaps for an array of redundant storage devices | John Andruszkiewicz, Robert A. Brooks, Leonard S. Szubowicz, James J. Friedrichs | 2012-09-25 |
| 7197665 | Physical incremental backup using snapshots | David W. Thiel, Richard F. Wrenn | 2007-03-27 |
| 6665815 | Physical incremental backup using snapshots | David W. Thiel, Richard F. Wrenn | 2003-12-16 |
| 5315657 | Compound principals in access control lists | Martin Abadi, Butler W. Lampson | 1994-05-24 |
| 5224163 | Method for delegating authorization from one entity to another through the use of session encryption keys | Morrie Gasser, Charles W. Kaufman, Butler W. Lampson | 1993-06-29 |
| 5220604 | Method for performing group exclusion in hierarchical group structures | Morrie Gasser, Charles W. Kaufman | 1993-06-15 |