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Expired Canadian patentCanada

Ultra-wideband radar system using sub-band coded pulses

CA 2526133 C · Owner: Rogerson, Gerald D. · Inventors: Furuno, David S.; Walker, Michael L.; Rogerson, Gerald D.

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Abstract From the Canadian patent

Methods and apparatus are provided for radar systems using multiple pulses that are shorter than the expected range delay extent of the target to be imaged. In one implementation, a method for performing radar includes the steps of: transmitting a plurality of pulses (2502) each pulse having a , different center frequency and a time duration shorter than an expected range delay extent of a target, wherein a total bandwidth is defined by a bandwidth occupied by the plurality of pulses; receiving reflections of the plurality of pulses (2504); and performing pulse compression on the received pulse reflections to generate a detection signal (2506) having a radar resolution approximately …

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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 21, 2004 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2026.
  • 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 21, 2004
GrantedApril 10, 2012
Term endedMay 21, 2024
Patent numberCA 2526133 C
Classification (IPC)G01S7/32 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 21, 2004Patent grantedApril 10, 2012Term endedMay 21, 2024

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