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Expired Canadian patentCanada

Threat radar detection using flash correlation of radar and radar warning receiver data

CA 2177731 C · Owner: Popoli, Robert F. · Inventors: Oxford, Stephen C.; Popoli, Robert F.

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Abstract From the Canadian patent

Multi-sensor correlation apparatus and methods for flash correlating data derived from a radar and a radar warning receiver to more accurately determine the direction to a threat radar that emits a reflection beam in the same direction as its transmit beam. Data association is performed by comparing the intercept timing of the main transmission lobe of the threat radar as observed by the radar warning receiver with the intercept timing of the main reflection lobe of the threat radar observed by the radar. The radar apparatus comprises the radar for detecting the reflection beam and, the radar warning receiver for simultaneously detecting the transmit beam. A flash correlator detects the …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed May 29, 1996 and granted February 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 29, 1996
GrantedFebruary 27, 2001
Term endedMay 29, 2016
Patent numberCA 2177731 C
Classification (IPC)G01S7/49 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedMay 29, 1996Patent grantedFeb 27, 2001Term endedMay 29, 2016

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.