Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10643203 | Secure transaction controller for value token exchange systems | Andreas Furche | 2020-05-05 |
| 6718314 | Multi-purpose transaction card system | David Chaum, Niels T. Ferguson | 2004-04-06 |
| 6434238 | Multi-purpose transaction card system | David Chaum, Niels T. Ferguson | 2002-08-13 |