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Class Information
Number: 342/42
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Radar transponder system
Description: Subject matter having means wherein the radar signal is received from an originating station, has information coded thereon or added and is retransmitted to the originating station.

Sub-classes under this class:

Class Number Class Name Patents
342/43 Combined with primary radar system 100
342/45 Iff or sif 194
342/46 Navigational 133
342/51 Radar transponder only 447
342/44 Unique identity 420
342/50 With telemetry 151

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8681040 System and method for aiding pilots in resolving flight ID confusion Mar. 25, 2014
8665138 Method and system for reducing light pollution Mar. 4, 2014
8659430 Radio frequency signal acquisition and source location system Feb. 25, 2014
8654003 Omnidirectional pseudo-antenna for interrogator or system allowing the interrogation response and/or passive listening functions Feb. 18, 2014
8638255 System for reading information transmitted from a transponder Jan. 28, 2014
RE44691 Multi-frequency identification device Jan. 7, 2014
8626249 Charging station that operates as an intermediary device between mobile devices and other devices Jan. 7, 2014
8624774 Method and system of locating objects Jan. 7, 2014
8610618 Method for identifying a facility on the ground or at sea Dec. 17, 2013
8604965 Apparatus and method to generate and detect virtual targets Dec. 10, 2013
8593331 RF ranging-assisted local motion sensing Nov. 26, 2013
8576114 Location of a transponder center point Nov. 5, 2013
8571609 Wireless power transmission method Oct. 29, 2013
8535183 Goal detector for detection of an object passing a goal plane Sep. 17, 2013
8477061 Method and system for preventing anti-aircraft warfare engagement with neutral aircraft Jul. 2, 2013
8462042 Generating a kinematic indicator for combat identification classification Jun. 11, 2013
8441391 Ultra-secure communication methods and apparatus May. 14, 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
8405543 Circuit and method for distance measurement between two nodes of a radio network Mar. 26, 2013
8405539 Target identification method for a synthetic aperture radar system Mar. 26, 2013
8400274 Accurate persistent nodes Mar. 19, 2013
8400279 Wireless communication tag and wireless communication system Mar. 19, 2013
8400347 Device and method for monitoring the location of aircraft on the ground Mar. 19, 2013
8390505 Process and a device for detecting aircrafts circulating in an air space surrounding an airplane Mar. 5, 2013
8380389 Health monitoring systems and methods with vehicle identification Feb. 19, 2013
8351856 Adaptive inductive power supply with communication Jan. 8, 2013
8334801 System and method for real-time locating Dec. 18, 2012
8319641 Article management method including shared memory and reader/writers Nov. 27, 2012
8315561 Adaptive inductive power supply with communication Nov. 20, 2012
8314731 High-precision radio frequency ranging system Nov. 20, 2012
8301079 Adaptive inductive power supply with communication Oct. 30, 2012
8279111 Distance measuring system Oct. 2, 2012
8274368 Chipless microwave identification tag Sep. 25, 2012
8265808 Autonomous and automatic landing system for drones Sep. 11, 2012
8229472 System and method for enabling determination of a position of a transponder Jul. 24, 2012
8193970 Processing of a radio-communication frame in a system comprising at least three radio transmitter/receiver devices Jun. 5, 2012
8188908 System and method for measurement of distance to a tag by a modulated backscatter RFID reader May. 29, 2012
8179302 Apparatus for sharing an omnidirectional antenna between an IFF transponder and an IFF interrogator May. 15, 2012
8174363 Multi-transceiver RFID reader system with centralized control and frequency source May. 8, 2012
8159367 Methods for noise validated phase ranging RFID location Apr. 17, 2012
8149154 System, method, and software for performing dual hysteresis target association Apr. 3, 2012
8149155 Range measuring method, range measuring apparatus, non-contacted IC medium and range measuring system Apr. 3, 2012
8125371 System and method for reducing incidences of friendly fire Feb. 28, 2012
8120525 Systems and methods for obtaining aircraft state data from multiple data links Feb. 21, 2012
8116683 Adaptive inductive power supply with communication Feb. 14, 2012
8106767 Wireless tag communication system and image forming apparatus Jan. 31, 2012
8102303 Method for distance measurement and data transmission in a continuous wave radar system Jan. 24, 2012
8102301 Self-configuring ADS-B system Jan. 24, 2012
8098190 Apparatus and method for testing emergency locator beacons Jan. 17, 2012

1 2 3 4 5 6 7 8 9 10 11

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