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Expired Canadian patentCanada

Use of magnetic material to direct isolation of compounds and fractionation of multipart samples

CA 2839092 C · Owner: Becton, Dickinson And Company · Inventors: Gentle, Thomas M. Jr.; Collis, Matthew P.; Fort, Thomas L.

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Abstract From the Canadian patent

Methods for isolating a compound from a multipart typically biological sample. The methods use at least one paramagnetic particle having an associated electronic charge to bind compounds with the opposite charge to form a particle/compound complex. Alternatively the paramagnetic particles have a ligand or functional group with an affinity for a target compound to form a particle/compound complex. The complex can be immobilized by applying a magnetic field to the particle/protein complex. The sample may be further processed to obtain a protein sample in a more pure form or a sample depleted of select compounds.

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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 April 3, 2018. 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
GrantedApril 3, 2018
Term endedAugust 1, 2025
Patent numberCA 2839092 C
Classification (IPC)B01D37/00 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedAug 1, 2005Patent grantedApril 3, 2018Term 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.