Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6070803 | Reading device for a transponder | — | 2000-06-06 |
| 6044333 | Process and device to transmit data between a read/write device and a transponder | Hartmut Scheffler | 2000-03-28 |
| 5999099 | Rolling truck with a transponder | — | 1999-12-07 |
| 5751570 | Method of automatically identifying an unknown number of transponders with a reader and identification system for executing the method | Holger Merk | 1998-05-12 |
| 5491471 | Access control system where the card controls the transmission format of the card reader | — | 1996-02-13 |
| 5218343 | Portable field-programmable detection microchip | Wilfried Herrmann | 1993-06-08 |
| 5189396 | Electronic seal | — | 1993-02-23 |
| 4899132 | Motion sensor | Wilfried Herrmann | 1990-02-06 |
| 4801786 | Checking system and method for verifying checking stations in a monitoring system | — | 1989-01-31 |