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Expired Canadian patentCanada

System and method for determining internal radioactivity and absorbed dose estimates

CA 2211080 C · Owner: Raubitschek, Andrew · Inventors: Raubitschek, Andrew; Williams, Lawrence E.; Liu, An

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Abstract From the Canadian patent

A system and method determines internal radioactivity and absorbed dose estimates of a patient more accurately and with greater ease. Internal radioactivity is determined by the CAMI system and method which uses uptake information from the gamma camera images and anatomic data from CT scans. Absorbed dose estimates are obtained by the MAVSK system and method which uses a MCNP to simulate a voxel source kernel for 90Y analogous to a point source function.

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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 21, 1997 and granted November 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 21, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2019.
  • 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 21, 1997
GrantedNovember 9, 1999
Term endedJuly 21, 2017
Patent numberCA 2211080 C
Classification (IPC)A61B6/03 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJuly 21, 1997Patent grantedNov 9, 1999Term endedJuly 21, 2017

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