Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9520052 | Security tag system with improved range consistency | Mark Kiekhefer, Chris Hielsberg, Jason Guerrero | 2016-12-13 |
| 8736454 | Microprocessor controlled security tag | Gregory Kron, Richard E. Halbach, Mark J. Kieckhefer | 2014-05-27 |
| 8416081 | Microprocessor controlled security tag | Gregory Kron, Richard E. Halbach, Mark J. Kieckhefer | 2013-04-09 |
| 7994916 | Microprocessor controlled security tag | Gregory Kron, Richard E. Halbach, Mark J. Kieckhefer | 2011-08-09 |
| 7369462 | Wireless synchronous time system with solar powered transceiver | Mark A. Abbott, Jerald M. Cayo, Darrel L. Thompson, Derek J. Brykowski, Terrence J. O'Neill | 2008-05-06 |
| 7132944 | Microprocessor controlled security tag | Gregory Kron, Richard E. Halbach, Mark J. Kieckhefer | 2006-11-07 |
| 6084513 | Method and apparatus for tracking a patient | — | 2000-07-04 |
| 5463376 | System and method for synchronizing a receiver of an electronic article surveillance system and a transmitter thereof | — | 1995-10-31 |
| 5300922 | Swept frequency electronic article surveillance system having enhanced facility for tag signal detection | — | 1994-04-05 |
| 4568974 | Video scrambling by the application of a variable periodic scrambling waveform | Pieter den Toonder, Dennis E. Burke, Ronald Forbes | 1986-02-04 |