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Expired Canadian patentCanada

Calibrating imaging devices

CA 2574675 C · Owner: Resonant Medical Inc. · Inventors: Lachaine, Martin; Huang, Xing; Falco, Tony

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Abstract From the Canadian patent

Methods and apparatus for calibrating images and imaging devices to common coordinate systems utilize, in some embodiments rods that detectably reflect , an acoustic signal regardless of the incidence angle of the signal with respect to the rods. Typically, the rods are disposed within a "phantom" at known positions with respect to a room coordinate system. Images of the cylindrical rods may be obtained from different directions allowing the , imaging device to be calibrated to the room coordinate system.

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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 July 19, 2005 and granted November 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 19, 2005
GrantedNovember 24, 2015
Term endedJuly 19, 2025
Patent numberCA 2574675 C
Classification (IPC)G01N29/22 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJuly 19, 2005Patent grantedNov 24, 2015Term endedJuly 19, 2025

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