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Canadian application, no grantCanada

Methods of derivation and propagation of undifferentiated human embryonic stem (hes) cells on feeder-free matrices and human feeder layers

CA 2461859 A1 · Owner: Es Cell International Pte Ltd · Inventors: Woon-Khiong, Chan; Bongso, Ariffeen; Richards, Mark

CIPO record

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Abstract From the Canadian patent

The present invention relates to the field of stem cell culture in particular , undifferentiated stem cell culture and to methods for derivation and propagation of such cells. More particularly the invention relates to , derivation and propagation of undifferentiated HES cells on human feeder layers and/or in the absence of a feeder layer.The human feeder layers may be selected from the group including human fetal muscle (HFM) human fetal skin , (HFS), human adult fallopian tubal (HAFT) fibroblasts and human adult skin cells. They may be cultured in the presence of a suitable medium selected from the group including Human Embyonic Stem Cell (HES) Knockout (KO), or Human , Feeder (HF) …

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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 September 27, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 27, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 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.
FiledSeptember 27, 2002
GrantedNo grant recorded
Term endedSeptember 27, 2022
Patent numberCA 2461859 A1
Classification (IPC)C12N5/02 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedSep 27, 2002Term endedSep 27, 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.