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Expired Canadian patentCanada

Improved affinity matrices with enhanced visibility for molecular pull-down and immunoprecipitation applications

CA 2437381 C · Owner: Watson, Edward B. Iii · Inventors: Heuermann, Kenneth E.; Dapron, John G.; Watson, Edward B. Iii

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Abstract From the Canadian patent

An affinity matrix for use in affinity based molecular pull down and immunoprecipitation procedures. The affinity matrix comprises a polymeric support, a dye attached to a fraction of the polymeric support to enable optical detection of the polymeric support and an affinity ligand other than , the dye attached to a fraction of the polymeric support for the capture of a molecule. Also provided is a method for the isolation of a biomolecule from an aqueous solution. The method comprises combining the aqueous solution with an affinity matrix comprising a polymeric support and separating the affinity matrix from the aqueous solution. A dye is attached to a fraction of the polymeric …

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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 January 31, 2002 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 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.
FiledJanuary 31, 2002
GrantedMarch 27, 2012
Term endedJanuary 31, 2022
Patent numberCA 2437381 C
Classification (IPC)C07K1/14 +2 more

Timeline

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2003200520072009201120132015201720192021Application filedJan 31, 2002Patent grantedMarch 27, 2012Term endedJan 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.