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Class Information
Number: 340/572.4
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Article placement or removal (e.g., anti-theft) > Detectable device on protected article (e.g., "tag") > Specified processing arrangement for detected signal
Description: Subject matter where the manner of handling the detected signal, which results in a determination of placement or removal, is specified.

Patents under this class:

Patent Number Title Of Patent Date Issued
8223020 Method and device for synchronization of a decoder of a RFID receiver Jul. 17, 2012
8222999 Commodity display position alert system and commodity display position alert method Jul. 17, 2012
8217760 Applique nodes for performance and functionality enhancement in radio frequency identification systems Jul. 10, 2012
8217756 Rule-based filtering and alerting Jul. 10, 2012
8212678 RFID system, gate arrangement with RFID system and method of detecting transponders Jul. 3, 2012
8207855 Communication apparatus, system and method for self-contained breathing apparatus Jun. 26, 2012
8207853 Hybrid sensor/communication device, and method Jun. 26, 2012
8207828 Method and system using RFID tags for system re-configuration Jun. 26, 2012
8207827 Methods and systems for sensing upon radiation exposure Jun. 26, 2012
8207825 RFID reader with receiver clock derived from transmitter output Jun. 26, 2012
8204075 Inter-device wireless communication for intra-device communications Jun. 19, 2012
8203452 Intelligent RFID information management system Jun. 19, 2012
8203433 Method for commissioning an RFID network Jun. 19, 2012
8203429 Switched capacitance method for the detection of, and subsequent communication with a wireless transponder device using a single antenna Jun. 19, 2012
8199017 RFID integrated circuit with integrated antenna structure Jun. 12, 2012
8199016 RFID device with changeable characteristics Jun. 12, 2012
8198987 Radio tag reading device and radio tag recognition method using the device Jun. 12, 2012
8193912 RFID tag dynamically adjusting clock frequency Jun. 5, 2012
8188888 Method and traffic control system for controlling traffic flows including hazardous material or abnormal load transportation units May. 29, 2012
8188871 Drive current adjustment for transistors by local gate engineering May. 29, 2012
8188858 Method and apparatus for collecting data May. 29, 2012
8188787 Peak detector for detecting peaks in a modulated signal May. 29, 2012
8181873 Information reading apparatus and information reading method May. 22, 2012
8179262 Article management system, RFID tag, and apparatus for communicating with RFID tag May. 15, 2012
8179261 Identification and surveillance device, system and method for individual item level tracking May. 15, 2012
8179260 System and method of reading RFID tags at high speeds May. 15, 2012
8179258 Method for reading a tag May. 15, 2012
8179233 UHF timing system for participatory athletic events May. 15, 2012
8175517 Network device and method of transmitting content from a first network device to a second network device May. 8, 2012
8174386 RFID reader controlling device, interlocking method for RFID reader, and RFID reader controlling method May. 8, 2012
8174367 Causing RFID tags to backscatter more codes May. 8, 2012
8174356 RFID enabled access control system May. 8, 2012
8172978 Reinforced radio frequency identification device support and its manufacturing method May. 8, 2012
8169319 Virtual group maintenance and security May. 1, 2012
8169318 Radio frequency identification tag with tamper detection capability May. 1, 2012
8164460 Method and apparatus for coupling multiple microradios to an RFID tag antenna Apr. 24, 2012
8164459 Gateway radio frequency identification tag system Apr. 24, 2012
8164455 Backscatter communication system with reflector for transmitting a modulated signal to a reader Apr. 24, 2012
8164454 ID proximity monitoring of inventory objects Apr. 24, 2012
8159367 Methods for noise validated phase ranging RFID location Apr. 17, 2012
8159350 Method and system for localizing objects using passive RFID tags which identifies the RFID with an LED Apr. 17, 2012
8159331 Method and system for radiated power control for short range RFID tag reading Apr. 17, 2012
8154408 Methods and systems for identifying stacked sets and locating and tracking stacked sets Apr. 10, 2012
8154407 RFID device time synchronization from a public source Apr. 10, 2012
8145130 Portable electronic device Mar. 27, 2012
8144017 Transponder and method for operating a transponder Mar. 27, 2012
8143998 Noncontact IC card communication system and communication method Mar. 27, 2012
8138923 RFID security system and method, including security stamp Mar. 20, 2012
8138920 Tag reader Mar. 20, 2012
8138884 Access control system having multiple sensing antenna coils Mar. 20, 2012

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