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Expired Canadian patentCanada

Tumor treatment identification system

CA 2575759 C · Owner: Imquant, Inc. · Inventors: Sawyer, Timothy E.

CIPO record

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Abstract From the Canadian patent

An instrument is used to mark locations in tissue that define the boundary of a three-dimensional treatment zone. The position of the instrument is recorded by a tracking system and a treatment zone image is produced which depicts the treatment zone along with patient reference points also marked by the instrument. The treatment zone image is exported to a radiation treatment system which uses the patient reference points to align the treatment zone image with the patient and uses the treatment zone image to aim the radiation.

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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 August 1, 2005 and granted November 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 1, 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.
FiledAugust 1, 2005
GrantedNovember 18, 2014
Term endedAugust 1, 2025
Patent numberCA 2575759 C
Classification (IPC)A61N2/00

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedAug 1, 2005Patent grantedNov 18, 2014Term endedAug 1, 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.