1
John H Bowers, Thomas J Clare: Inventory system using articles with RFID tags. Checkpoint Systems, Akin Gump Strauss Hauer & Feld L, October 5, 1999: US05963134 (451 worldwide citation)

An article inventory control system for articles, such as books, uses RFID tags attached to each article. Each tag has a unique identification or serial number for identifying the individual article. An inventory database tracks all of the tagged articles and maintains circulation status information ...


2
John H Bowers, Thomas J Clare: RFID tags which are virtually activated and/or deactivated and apparatus and methods of using same in an electronic security system. Checkpoint Systems, Akin Gump Strauss Hauer & Feld L, February 15, 2000: US06025780 (337 worldwide citation)

An electronic security system uses a set of predefined RFID tags. Each tag is associated with, and attached to, an article or packaging for an article. Each tag includes unique tag information which is logged into a computerized database that contains a record for each of the tags in the set. A dete ...


3
Thomas J McKeown, Gary T Mazoki: Deactivateable security tag. Checkpoint Systems, Pantich Schwarze Jacobs & Nadel P C, November 12, 1996: US05574431 (306 worldwide citation)

A security tag used with an electronic article surveillance system for detecting the presence of the tag within a surveilled area utilizing electromagnetic energy at a frequency within a predetermined detection frequency range includes a dielectric substrate having first and second opposing principl ...


4
Thomas J Clare: Electronic article security system for store which uses intelligent security tags and transaction data. Checkpoint Systems, Panitch Schwarze Jacobs & Nadel P C, April 28, 1998: US05745036 (275 worldwide citation)

An electronic article security system monitors articles sold by a retail store to detect shrinkage. The articles are tagged with RF-ID security tags. Each security tag has a unique or semi-unique serial number for identifying individual products. Transaction records generated from point-of-sale term ...


5
John H Bowers, Thomas J Clare: Inventory system using articles with RFID tags. Checkpoint Systems, Woodcock Washburn Kurtz Mackiewicz & Norris, February 27, 2001: US06195006 (233 worldwide citation)

An article inventory control system for articles, such as books, uses RFID tags attached to each article. Each tag has a unique identification or serial number for identifying the individual article. An inventory database tracks all of the tagged articles and maintains circulation status information ...


6
John H Bowers, Thomas J Clare: Inventory system using articles with RFID tags. Checkpoint Systems, Woodcock Washburn, February 17, 2004: US06693539 (165 worldwide citation)

An article inventory control system for articles, such as books, uses RFID tags attached to each article. Each tag has a unique identification or serial number for identifying the individual article. An inventory database tracks all of the tagged articles and maintains circulation status information ...


7
Upamanyu Madhow, Ben J Wild, Kannan Ramchandran: Systems and methods of beamforming in radio frequency identification applications. Checkpoint Systems, Caesar Rivise Bernstein Cohen & Pokotilow, January 26, 2010: US07652577 (146 worldwide citation)

Systems and methods for beamforming in radio frequency identification (RFID) applications are disclosed. A beamforming system uses a distributed architecture and techniques for antenna beamforming using a feedback control loop to direct radio frequency (RF) energy onto a specific region, referred to ...


8
Donald W Hutchison: Binary encoded multiple frequency RF indentification tag. Checkpoint Systems, Panitch Schwarze Jacobs & Nadel, June 8, 1993: US05218189 (139 worldwide citation)

A tag for identifying an item to which it is attached includes an inductance connected in parallel with a capacitance. The capacitance includes a plurality of individual capacitors, each of a predetermined different capacitance. The individual capacitors are connected to the inductance to establish ...


9
Eric Alan Eckstein, Lawrence Appalucci, Gary Thomas Mazoki: Deactivateable resonant circuit. Checkpoint Systems, Panitch Schwarze Jacobs & Nadel P C, January 19, 1999: US05861809 (139 worldwide citation)

A resonant tag used with an electronic article surveillance system for detecting the presence of the tag within a surveilled area utilizing electromagnetic energy at a frequency within a predetermined detection frequency range includes a resonant circuit capable of resonating at a frequency within t ...


10
Luke C Chang: Coplanar multiple loop antenna for electronic article surveillance systems. Checkpoint Systems, Panitch Schwarze Jacobs & Nadel, August 25, 1992: US05142292 (131 worldwide citation)

An antenna for transmitting electromagnetic energy for deactivating a resonant tag circuit of an electronic article surveillance tag without regard to the orientation of the tag while minimizing far field radiation. The antenna includes a substantially planar dielectric substrate having a first side ...