Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8364967 | Multi-step digital signature method and system | Frank W. Sudia, Peter C. Freund | 2013-01-29 |
| 6209091 | Multi-step digital signature method and system | Frank W. Sudia, Peter C. Freund | 2001-03-27 |
| 5825880 | Multi-step digital signature method and system | Frank W. Sudia, Peter C. Freund | 1998-10-20 |