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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 6100804 |
Radio frequency identification system |
Aug. 8, 2000 |
| 6100840 |
Radio frequency tag system |
Aug. 8, 2000 |
| 6097292 |
Contactless proximity automated data collection system and method |
Aug. 1, 2000 |
| 6091342 |
Transponder communication device for the contactless communication with at least one transponder, and transponder for the contactless communication with at least one transponder communication |
Jul. 18, 2000 |
| 6081222 |
Joint surveillance target attack system combat transponder |
Jun. 27, 2000 |
| 6072408 |
Simulating the presence of a large motor vehicle in an inductive loop of a vehicular traffic signal light control system |
Jun. 6, 2000 |
| 6067039 |
Systems and methods for determining the distance between two locations |
May. 23, 2000 |
| 6064298 |
Antitheft system for a motor vehicle |
May. 16, 2000 |
| 6057765 |
Non-linear junction detector |
May. 2, 2000 |
| 6057779 |
Method of controlling access to a movable container and to a compartment of a vehicle, and a secure cargo transportation system |
May. 2, 2000 |
| 6054925 |
High impedance transponder with improved backscatter modulator for electronic identification system |
Apr. 25, 2000 |
| 6052065 |
Vin reading and transmitting system |
Apr. 18, 2000 |
| 6046683 |
Modulated backscatter location system |
Apr. 4, 2000 |
| 6034625 |
Radio-communication vehicle identification system |
Mar. 7, 2000 |
| 6011488 |
Radio frequency interface device for a transponder |
Jan. 4, 2000 |
| 5955949 |
Layered structure for a transponder tag |
Sep. 21, 1999 |
| 5933096 |
Non-stop automatic toll collection system |
Aug. 3, 1999 |
| 5929801 |
Method for repeating interrogations until failing to receive unintelligible responses to identify plurality of transponders by an interrogator |
Jul. 27, 1999 |
| 5929780 |
Method of monitoring and programming a plurality of transponders simultaneously, and apparatus for implementing the method |
Jul. 27, 1999 |
| 5917423 |
Vehicles tracking transponder system and transponding method |
Jun. 29, 1999 |
| 5910776 |
Method and apparatus for identifying locating or monitoring equipment or other objects |
Jun. 8, 1999 |
| 5905444 |
Anti-theft system for a motor vehicle |
May. 18, 1999 |
| 5895436 |
Vehicle tracking system using cellular network |
Apr. 20, 1999 |
| 5891240 |
Radio frequency automatic identification system |
Apr. 6, 1999 |
| 5883592 |
Method and apparatus for remotely identifying an electronically coded article |
Mar. 16, 1999 |
| 5872520 |
Identification and/or sensor system |
Feb. 16, 1999 |
| 5864302 |
Transmitting and receiving system |
Jan. 26, 1999 |
| 5861817 |
System for, and method of, displaying prices on tags in supermarkets |
Jan. 19, 1999 |
| 5856788 |
Method and apparatus for radiofrequency identification tags |
Jan. 5, 1999 |
| 5841364 |
Method and apparatus for transfering information from a transponder |
Nov. 24, 1998 |
| 5838236 |
Manufacturing method and apparatus |
Nov. 17, 1998 |
| 5838235 |
Station, a passive portable object and apparatus for the remote exchange of information between the passive portable object and the station |
Nov. 17, 1998 |
| 5822714 |
Data processing system and method for accessing a plurality of radio frequency identification tags |
Oct. 13, 1998 |
| 5792337 |
Method and apparatus for detection of corrosion |
Aug. 11, 1998 |
| 5793324 |
Transponder signal collision avoidance system |
Aug. 11, 1998 |
| 5793630 |
High precision spatially defined data transfer system |
Aug. 11, 1998 |
| 5790052 |
Method for determining the position of a vehicle on a road |
Aug. 4, 1998 |
| 5790014 |
Charging a transponder in a security system |
Aug. 4, 1998 |
| 5787174 |
Remote identification of integrated circuit |
Jul. 28, 1998 |
| 5784686 |
IQ combiner technology in modulated backscatter system |
Jul. 21, 1998 |
| 5751570 |
Method of automatically identifying an unknown number of transponders with a reader and identification system for executing the method |
May. 12, 1998 |
| 5748137 |
Wireless flywheel synchronization method |
May. 5, 1998 |
| 5734332 |
Identification device |
Mar. 31, 1998 |
| 5731691 |
Power supply circuitry for a transponder and operable with infinitesimal power from receiving antenna |
Mar. 24, 1998 |
| 5719550 |
Arrangement for identification of a movable object having a transponder |
Feb. 17, 1998 |
| 5717390 |
Doppler-radar based automatic vehicle-classification system |
Feb. 10, 1998 |
| 5712630 |
High power moving object identification system |
Jan. 27, 1998 |
| 5701127 |
Automatic vehicle identification system capable of vehicle lane discrimination |
Dec. 23, 1997 |
| 5699066 |
Synchronized electronic identification system |
Dec. 16, 1997 |
| 5696485 |
Method for charging a transponder |
Dec. 9, 1997 |
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