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High-performance mobile power antennas
Grant 8,049,625 - Duan , et al. November 1, 2 | 2011-11-01 |
Radio frequency identification system with write broadcast capability
Grant 7,616,094 - Heinrich , et al. November 10, 2 | 2009-11-10 |
High-performance mobile power antennas
Grant 7,511,621 - Duan , et al. March 31, 2 | 2009-03-31 |
Method and system for storage and recovery of vital information on radio frequency transponders
Grant 7,427,912 - Heinrich , et al. September 23, 2 | 2008-09-23 |
Multiple Item Radio Frequency Tag Identification Protocol
App 20070176751 - Cesar; Christian Lenz ; et al. | 2007-08-02 |
System and Method for Radio Frequency Tag Group Select
App 20070159305 - Cesar; Christian Lenz ; et al. | 2007-07-12 |
Diode receiver for radio frequency transponder
Grant 7,215,248 - Heinrich , et al. May 8, 2 | 2007-05-08 |
Radio frequency identification transponder with a quadrupler or N-tupler circuit for efficient RF to DC conversion
Grant 7,158,091 - Pillai , et al. January 2, 2 | 2007-01-02 |
System and method for radio frequency tag group select
Grant 7,158,046 - Cesar , et al. January 2, 2 | 2007-01-02 |
Radio frequency identification transponder with a quadrupler or N-tupler circuit for efficient RF to DC conversion
App 20050231438 - Pillai, Vijay ; et al. | 2005-10-20 |
RFID tag having combined battery and passive power source
Grant 6,944,424 - Heinrich , et al. September 13, 2 | 2005-09-13 |
System and method for radio frequency tag group select
App 20050168348 - Cesar, Christian Lenz ; et al. | 2005-08-04 |
Radio frequency identification system write broadcast capability
Grant 6,919,793 - Heinrich , et al. July 19, 2 | 2005-07-19 |
Radio frequency identification system with write broadcast capability
App 20050088286 - Heinrich, Harley Kent ; et al. | 2005-04-28 |
RFID tag with a quadrupler or N-tupler circuit for efficient RF to DC conversion
Grant 6,859,190 - Pillai , et al. February 22, 2 | 2005-02-22 |
Diode receiver for radio frequency transponder
App 20050001724 - Heinrich, Harley Kent ; et al. | 2005-01-06 |
Passive RFID tag that retains state after temporary loss of power
Grant 6,812,841 - Heinrich , et al. November 2, 2 | 2004-11-02 |
RFID tag with a quadrupler or N-tupler circuit for efficient RF to DC conversion
App 20030222763 - Pillai, Vijay ; et al. | 2003-12-04 |
Passive RFID tag that retains state after temporary loss of power
App 20030137400 - Heinrich, Harley Kent ; et al. | 2003-07-24 |
Low-voltage, low-power bandgap reference circuit with bootstrap current
Grant 6,566,850 - Heinrich May 20, 2 | 2003-05-20 |
RFID tag having combined battery and passive power source
App 20030017804 - Heinrich, Harley Kent ; et al. | 2003-01-23 |
Low-voltage, low-power bandgap reference circuit with bootstrap current
App 20020125874 - Heinrich, Harley Kent | 2002-09-12 |
Radio Frequency Identification System Write Broadcast Capability
App 20020118097 - HEINRICH, HARLEY KENT ; et al. | 2002-08-29 |
Apparatus for transporting radio frequency power to energize radio frequency identification transponders
Grant 6,429,775 - Martinez , et al. August 6, 2 | 2002-08-06 |
Method and system for storage and recovery of vital information on radio frequency transponders
Grant 6,404,325 - Heinrich , et al. June 11, 2 | 2002-06-11 |
High-performance mobile power antennas
Grant 6,400,274 - Duan , et al. June 4, 2 | 2002-06-04 |
Wrist mounted RFID reader and/or antenna
App 20020044058 - Heinrich, Harley Kent ; et al. | 2002-04-18 |
Adjustable length antenna system for RF transponders
App 20020003496 - Brady, Michael John ; et al. | 2002-01-10 |
Method of using write--ok flag for radio frequency (RF) transponders (RF Tags)
Grant 6,288,629 - Cofino , et al. September 11, 2 | 2001-09-11 |
Radio frequency transponder with improved read distance
Grant 6,281,794 - Duan , et al. August 28, 2 | 2001-08-28 |
System method and apparatus for identifying and communicating with a plurality of types of radio frequency communication devices
Grant 6,172,596 - Cesar , et al. January 9, 2 | 2001-01-09 |
Automated RFID transponder manufacturing on flexible tape substrates
Grant 6,140,146 - Brady , et al. October 31, 2 | 2000-10-31 |
Antenna for RF tag with a magnetoelastic resonant core
Grant 6,130,612 - Castellano , et al. October 10, 2 | 2000-10-10 |
System for controlling assets
Grant 6,121,878 - Brady , et al. September 19, 2 | 2000-09-19 |
Radio frequency identification transponder with electronic circuit enabling/disabling capability
Grant 6,104,281 - Heinrich , et al. August 15, 2 | 2000-08-15 |
Wire antenna with stubs to optimize impedance for connecting to a circuit
Grant 6,097,347 - Duan , et al. August 1, 2 | 2000-08-01 |
Radio frequency identification tag
Grant 6,078,259 - Brady , et al. June 20, 2 | 2000-06-20 |
Wire antenna with optimized impedance for connecting to a circuit
Grant 6,028,564 - Duan , et al. February 22, 2 | 2000-02-22 |
Method for communicating with RF transponders
Grant 5,995,019 - Chieu , et al. November 30, 1 | 1999-11-30 |
Method of making a radio frequency identification tag
Grant 5,972,156 - Brady , et al. October 26, 1 | 1999-10-26 |
Method of flagging partial write in RF tags
Grant 5,966,082 - Cofino , et al. October 12, 1 | 1999-10-12 |
Radio frequency identification system with write broadcast capability
Grant 5,942,987 - Heinrich , et al. August 24, 1 | 1999-08-24 |
Single chip RF tag oscillator circuit synchronized by base station modulation frequency
Grant 5,912,632 - Dieska , et al. June 15, 1 | 1999-06-15 |
Radio frequency identification transponder with electronic circuit enabling/disabling capability
Grant 5,874,902 - Heinrich , et al. February 23, 1 | 1999-02-23 |
Method of transporting radio frequency power to energize radio frequency identification transponders
Grant 5,850,181 - Heinrich , et al. December 15, 1 | 1998-12-15 |
Method of grouping RF transponders
Grant 5,777,561 - Chieu , et al. July 7, 1 | 1998-07-07 |
Communication channels through electrically conducting enclosures via frequency selective windows
Grant 5,767,789 - Afzali-Ardakani , et al. June 16, 1 | 1998-06-16 |
Circuit antitheft and disabling mechanism
Grant 5,739,754 - Schrott , et al. April 14, 1 | 1998-04-14 |
Radio frequency identification tag
Grant 5,682,143 - Brady , et al. October 28, 1 | 1997-10-28 |
System and method for radio frequency tag group select
Grant 5,673,037 - Cesar , et al. September 30, 1 | 1997-09-30 |
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