Issued Patents All Time
Showing 51–60 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5867101 | Multi-phase mode multiple coil distance deactivator for magnetomechanical EAS markers | John T. Richter, Kevin R. Coffey | 1999-02-02 |
| 5729200 | Magnetomechanical electronic article surveilliance marker with bias element having abrupt deactivation/magnetization characteristic | Kevin R. Coffey | 1998-03-17 |
| 5594420 | Rotating magnet array for deactivating EAS markers | Paul N. Manente | 1997-01-14 |
| 5351033 | Semi-hard magnetic elements and method of making same | Nen-Chin Liu, Robert C. O'Handley, Wing K. Ho | 1994-09-27 |
| 5321412 | Antenna arrangement with reduced coupling between transmit antenna and receive antenna | Markus B. Kopp | 1994-06-14 |
| 5218371 | Antenna array for enhanced field falloff | Markus B. Kopp | 1993-06-08 |
| 5103234 | Electronic article surveillance system | Harry E. Watkins, Brent F. Balch, Jeffrey T. Oakes, Hubert A. Patterson, Mart Martinson | 1992-04-07 |
| 5051726 | Electronic article surveillance system with antenna array for enhanced field falloff | Markus B. Kopp | 1991-09-24 |
| 4859991 | Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation | Harry E. Watkins, Brent F. Balch, Jeffery T. Oakes, Hubert A. Patterson, Mart Martinson | 1989-08-22 |
| 4769631 | Method, system and apparatus for magnetic surveillance of articles | — | 1988-09-06 |