Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5802176 | System for controlling access to a function, using a plurality of dynamic encryption variables | — | 1998-09-01 |
| 5737421 | System for controlling access to a function having clock synchronization | — | 1998-04-07 |
| 5347110 | Information transmission by the time modulation of a character display area | Achille Delahaye | 1994-09-13 |
| 5297205 | Portable electronic device to establish public loyalty to a medium or similar | Achille Delahaye | 1994-03-22 |
| 5136644 | Portable electronic device for use in conjunction with a screen | Achille Delahaye | 1992-08-04 |
| 5073931 | System and individual device for participation in a broadcast program | Achille Delahaye | 1991-12-17 |
| D313410 | Electronic card for receiving information from a video screen | Achille Delahaye | 1991-01-01 |
| D313229 | Electronic card for receiving information from a video screen | Achille Delahaye | 1990-12-25 |