Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6553351 | System with and method of cryptographically protecting communications | Eduard de Jong | 2003-04-22 |
| 6510998 | Card charging system | Eduard de Jong | 2003-01-28 |
| 6402038 | Card charging system | Eduard de Jong | 2002-06-11 |
| 6375084 | Card charging systems | Eduard de Jong | 2002-04-23 |
| 5930363 | Card charging systems | Eduard de Jong | 1999-07-27 |