| Patent Number |
Title Of Patent |
Date Issued |
| 7421245 |
Field-shaping shielding for radio frequency identification (RFID) system |
September 2, 2008 |
| A radio frequency identification (RFID) system is described that utilizes a substantially-contiguous conductive shield to shape an electromagnetic field formed by an antenna for communication with RFID tags. The antenna and the conductive shield have substantially planar forms, and may b |
| 7417599 |
Multi-loop antenna for radio frequency identification (RFID) communication |
August 26, 2008 |
| A multi-loop antenna is described having a plurality of conductive loops to produce an electromagnetic field for radio frequency identification (RFID) communication with RFID tags. The conductive loops are spaced apart at least a distance that is selected based on a dimension of the |
| 7405663 |
System for detecting radio-frequency identification tags |
July 29, 2008 |
| Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the |
| 7372364 |
Algorithm for RFID security |
May 13, 2008 |
| Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the |
| 7119692 |
System for detecting radio-frequency identification tags |
October 10, 2006 |
| Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the |
| 6646554 |
Identification tag with enhanced security |
November 11, 2003 |
| A combination tag is disclosed, including a magnetically-responsive element and a radio frequency-responsive element. In one embodiment, the magnetically-responsive element also functions as an antenna for the radio frequency-responsive element. |
| 6600420 |
Application for a radio frequency identification system |
July 29, 2003 |
| Antenna shelf tape is disclosed for use with items having radio frequency identification elements or tags associated with items of interest. |
| 6335686 |
Application for a radio frequency identification system |
January 1, 2002 |
| Antenna shelf tape is disclosed for use with items having radio frequency identification elements or tags associated with items of interest. |
| 6154137 |
Identification tag with enhanced security |
November 28, 2000 |
| A combination tag is disclosed, including a magnetically-responsive element and a radio frequency-responsive element. In one embodiment, the magnetically-responsive element also functions as an antenna for the radio frequency-responsive element. |
