Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6115601 | Payment scheme for a mobile communication service | — | 2000-09-05 |
| 5889622 | Data processing device including a microprocessor and an additional arithmetic unit | Thomas Wille, Ralf Malzahn, Jean-Jaques Quisquater | 1999-03-30 |
| 5748782 | Device for implementing a message signature system and chip card comprising such a device | Joseph Hoppe | 1998-05-05 |