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Expired Canadian patentCanada

System and methods for electrophoretic separation of proteins on protein binding membranes

CA 2498354 C · Owner: Yonan, Christopher R. · Inventors: Yonan, Christopher R.; Chang, Frank N.

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Abstract From the Canadian patent

Proteins can be rapidly separated to a high degree of resolution by electrophoresis on polymeric membranes that have high protein binding capacity. The electrophoretic separation is carried out in a low conductivity water-miscible organic solvent buffer. The low conductivity of the organic solvent buffer minimizes heat generation and the water-miscible nature of the , organic solvent buffer permits the analysis of hydrophobic and low molecular weight proteins as well as hydrophilic proteins. When electrophoresis is conducted under non-denaturing conditions it allows the detection of , enzymatic activities protein-protein interactions and protein~ligand interactions.

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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 9, 2003 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2025.
  • 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 9, 2003
GrantedMarch 20, 2012
Term endedSeptember 9, 2023
Patent numberCA 2498354 C
Classification (IPC)G01N27/44 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedSep 9, 2003Patent grantedMarch 20, 2012Term endedSep 9, 2023

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