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Expired Canadian patentCanada

Polyamide resin and resin-protide, and methods for preparation of reagents and of immunodiagnostic testing

CA 1339670 C · Owner: Southwest Foundation For Biomedical Research · Inventors: Kennedy, Ronald C.; Sparrow, James T.; Kanda, Patrick

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Abstract From the Canadian patent

A polyamide resin for use in peptide protein-synthesis and a method of preparing and using same. The polyamide resin is prepared by cross-linking a dimethylacrylamide monomer by co-polymerization with a functional monomer in an aqueous solution, emulsifying the aqueous solution in an organic solvent and isolating the polyamide resin beads formed by adding an initiator and a promotor. The beads are used as a solid phase for peptide and protein synthesis according to methods known in the art. The conjugate of the polyamide resin and the synthesized peptide or protein is used directly for immunoassays or immunization without the need for separation of the peptide or protein from the resin and …

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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 February 10, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 10, 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.
FiledApril 29, 1987
GrantedFebruary 10, 1998
Term endedFebruary 10, 2015
Patent numberCA 1339670 C
Classification (IPC)C08G69/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006200920122015Application filedApril 29, 1987Patent grantedFeb 10, 1998Term endedFeb 10, 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.