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Expired Canadian patentCanada

Method for drift compensation with radar measurements with the aid of reference radar signals

CA 2483971 C · Owner: Airbus Defence And Space Gmbh · Inventors: Voelker, Michael; Braubach, Harald

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Abstract From the Canadian patent

A method is described for radar measurement by transmitting and receiving radar signals with at least two spatially separated radar systems where a signal exchange takes place between the two radar systems to determine measurement-relevant parameters. An exchange of reference radar signals thereby takes place between at least two radar systems. On the basis of the reference radar signals received a determination takes place of the relative phase relationship of the radar signals of the radar systems and/or the relative time position of time references of the radar systems.

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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 October 5, 2004 and granted January 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 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.
FiledOctober 5, 2004
GrantedJanuary 29, 2013
Term endedOctober 5, 2024
Patent numberCA 2483971 C
Classification (IPC)G01S13/87 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedOct 5, 2004Patent grantedJan 29, 2013Term endedOct 5, 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.