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Expired Canadian patentCanada

A method of purification of neural stem cells

CA 2449979 C · Owner: Rietze, Rodney Lee · Inventors: Rietze, Rodney Lee; Bartlett, Perry Francis

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Abstract From the Canadian patent

The present invention relates generally to a method for the generation of a substantially homogeneous population of undifferentiated cells. More particularly, the present invention relates to the purification of a substantially homogeneous population of stem cells and their progenitor or precursor cells. Even more particularly the present invention provides a , population of neural stem cells (NSCs). The subject invention is particularly directed to NSCs and precursor cells with the capacity to differentiate into cells and cell lineages required for the development maintenance or repair of , the central nervous system in an animal such as a mammal. The present invention is further …

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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 31, 2002 and granted November 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2024.
  • 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 31, 2002
GrantedNovember 24, 2015
Term endedMay 31, 2022
Patent numberCA 2449979 C
Classification (IPC)C12N5/07 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMay 31, 2002Patent grantedNov 24, 2015Term endedMay 31, 2022

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