Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6016955 | Electronic payment method and system having several calculation units and electronic payment devices | Peter de Rooij, Frank Muller, Rafael Hirschfeld | 2000-01-25 |
| 5870479 | Device for processing data packets | Albertus Feiken, Martin De Lange, Gerrit Roelofsen, Maurice Matthias Feijen | 1999-02-09 |
| 5809147 | Device for cryptographically processing data packets and method of generating cryptographic processing data | Martin De Lange | 1998-09-15 |
| 5278906 | System for encoding data presented with a first coding device and for decoding encoded data with a second coding device, and coding device for use in the system | Martin De Lange, Gerrit Roelofsen, Gerrit J. van Loo, Jr. | 1994-01-11 |