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Expired Canadian patentCanada

Paralog affinity chromatography

CA 1339768 C · Owner: Kauvar, Lawrence M. · Inventors: Kauvar, Lawrence M.

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Abstract From the Canadian patent

23-, A method for affinity chromatography or adsorption of a designated analyte utilizes a paralog as the affinity partner. The immobilized paralog can be used in purification or analysis of the analyte; the paralog can also be used as a substitute for antibody in an immunoassay. The paralog is identified by screening candidate peptide sequences of 4-20 amino acids for specific affinity to the analyte.

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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

  • Granted March 24, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 23, 1989
GrantedMarch 24, 1998
Term endedMarch 24, 2015
Patent numberCA 1339768 C
Classification (IPC)G01N33/68 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedMarch 23, 1989Patent grantedMarch 24, 1998Term endedMarch 24, 2015

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