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Class Information
Number: 342/44
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Radar transponder system > Unique identity
Description: Subject matter wherein the coded radar retransmitted (reply) signal contains information used to distinguish the transponder station from all others.

Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8712612 System for determining movement properties of a guided vehicle Apr. 29, 2014
8681040 System and method for aiding pilots in resolving flight ID confusion Mar. 25, 2014
8659430 Radio frequency signal acquisition and source location system Feb. 25, 2014
8649915 Method and apparatus to facilitate providing a synthetic view of terrain for use in a moving vehicle Feb. 11, 2014
8624774 Method and system of locating objects Jan. 7, 2014
RE44691 Multi-frequency identification device Jan. 7, 2014
8583329 Techniques for improving safe operation of a vehicle Nov. 12, 2013
8576114 Location of a transponder center point Nov. 5, 2013
8519826 Tag having a semiconductor chip and method of attachment to article Aug. 27, 2013
8487809 System for response to a signal transmitted by a radar and use of this system notably for testing radars, in particular of the MTI type Jul. 16, 2013
8489263 Information device for a vehicle Jul. 16, 2013
8432253 Zone determination by combining signal strength with topological factors Apr. 30, 2013
8421631 Radio frequency signal acquisition and source location system Apr. 16, 2013
8400279 Wireless communication tag and wireless communication system Mar. 19, 2013
8384584 Reduced computation communication techniques for location systems Feb. 26, 2013
8358212 Multi-modal transponder and method and apparatus to detect same Jan. 22, 2013
8350753 Methods and systems for displaying an object having an associated beacon signal Jan. 8, 2013
8350767 Notch antenna having a low profile stripline feed Jan. 8, 2013
8346437 Vehicle driving support device and vehicle driving support method Jan. 1, 2013
8269664 Covert long range positive friendly identification system Sep. 18, 2012
8228193 Tag having a semiconductor chip and method of attachment to article Jul. 24, 2012
8174363 Multi-transceiver RFID reader system with centralized control and frequency source May. 8, 2012
8131239 Method and apparatus for remote detection of radio-frequency devices Mar. 6, 2012
8098190 Apparatus and method for testing emergency locator beacons Jan. 17, 2012
8049624 Wireless communication method Nov. 1, 2011
8049625 High-performance mobile power antennas Nov. 1, 2011
8044824 Electronic barrier and enforcement system and method Oct. 25, 2011
8018340 System and method to track articles at a point of origin and at a point of destination using RFID Sep. 13, 2011
7994918 Method and system for monitoring one or more objects by electronic device Aug. 9, 2011
7961077 Authenticity determination system of responder, identification system, and interrogation unit Jun. 14, 2011
7952512 Mobile device enabled radar tags May. 31, 2011
7920071 Augmented reality-based system and method providing status and control of unmanned vehicles Apr. 5, 2011
7917088 Adaptable detection threshold for RFID tags and chips Mar. 29, 2011
7884753 Apparatus and method for ranging of a wireless transceiver with a switching antenna Feb. 8, 2011
7859387 Backscatter transponder Dec. 28, 2010
7847722 Secondary surveillance radar and method of analyzing replies for secondary surveillance radar Dec. 7, 2010
7825802 Identification system and method of determining motion information Nov. 2, 2010
7786922 Systems and methods employing active TCAS to enhance situational awareness Aug. 31, 2010
7746230 Radio frequency identification device and method Jun. 29, 2010
7667618 System and method for tracking and billing vehicle users based on when and in which road lanes their vehicles have been driven Feb. 23, 2010
7646330 System and method for locating objects and communicating with the same Jan. 12, 2010
7602274 Dynamic configuration of a radio frequency transponder Oct. 13, 2009
7583192 Radio frequency identification device and method Sep. 1, 2009
7583937 Digital interface and related event manager for integrated circuits Sep. 1, 2009
7551903 Reflecting modulator circuit comprising a negative impedance amplifier Jun. 23, 2009
7536169 Method of and apparatus for utilizing geographically spread cellular radio networks to supplement more geographically limited stolen vehicle recovery radio networks in activation of radio trac May. 19, 2009
7501978 Short-distance ranging system Mar. 10, 2009
7489240 System and method for 3-D position determination using RFID Feb. 10, 2009
7479884 System and method for monitoring objects, people, animals or places Jan. 20, 2009
7447480 Wireless, especially mobile, communication device for communicating with communication devices in vehicles Nov. 4, 2008

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