Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9288038 | Access-controlled data storage medium | Hermann Drexler, Eric M. Johnson | 2016-03-15 |
| 8457302 | Access-controlled data storage medium | Hermann Drexler, Eric M. Johnson | 2013-06-04 |
| 8423797 | Initialization of a chip card | Karl Eglof Hartel | 2013-04-16 |
| 7602916 | Access-protected data carrier | Hermann Drexler | 2009-10-13 |
| 7447913 | Portable data carrier provided with access protection by dividing up codes | Hermann Drexler | 2008-11-04 |
| 7441125 | Portable data carrier provide with access protection by rendering messages unfamiliar | Hermann Drexler | 2008-10-21 |