Purification of recombinant proteins fused to multiple epitopes
CA 2386471 C · Owner: Sigma-Aldrich Co. Llc · Inventors: Brizzard, Bill; Hernan, Ron
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides novel identification polypeptides containing multiple copies of an antigenic domain joined in tandem to provide increased sensitivity for the detection and purification of target peptides a cleavable , linking sequence and optionally a spacer domain. Further provided are hybrid polypeptide molecules composed of an identification polypeptide and a target peptide which are produced by recombinant DNA technology and purified using affinity chromatography using one or more ligands. Accordingly also provided , are DNA expression vectors containing DNA encoding for identification polypeptides and methods for using such identification polypeptides for the …
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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 20, 2000 and granted June 21, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.