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Expired Canadian patentCanada

Methods for two-dimensional conformationdependent separation of non-circular nucleic acids

CA 2477345 C · Owner: Gudmundsson, Bjarki · Inventors: Thormar, Hans Guttormur; Jonsson, Jon Johannes; Gudmundsson, Bjarki

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Abstract From the Canadian patent

Methods are provided for separating linear nucleic acid fragments based on their conformation. The methods are based on novel two-dimensional gel electrophoresis techniques. In one aspect the method comprises electrophoresing a sample of nucleic acids in a first dimension said sample through a gel matrix under a first set of pre-determined electrophoresis conditions; electrophoresing said gel matrix in a second dimension under a second set of electrophoresis conditions such that linear nucleic acid , fragments of equal length but having different conformation are separated; said first and second electrophoresis conditions are different such that in , one of said dimensions …

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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 February 25, 2003 and granted May 2, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 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.
FiledFebruary 25, 2003
GrantedMay 2, 2017
Term endedFebruary 25, 2023
Patent numberCA 2477345 C
Classification (IPC)C12N15/10

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedFeb 25, 2003Patent grantedMay 2, 2017Term endedFeb 25, 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.