Hepatitis c assay utilizing recombinant antigens from ns5 region
CA 2115925 A1 · Owner: Desai, Suresh M. · Inventors: Dailey, Stephen H.; Desai, Suresh M.; Devare, Sushil G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a unique recombinant antigen representing the distinct NS5 antigenic region of the HCV genome which can be used as reagents for the detection of antibodies and antigen in body fluids from individuals exposed to hepatitis C virus (HCV). The present invention also provides an assay for detecting the presence of an antibody to an HCV antigen in a sample by contacting the sample with the recombinant antigen. Preferred assay formats include a screening assay, a confirmatory assay a, competition or neutralization assay and an immunodot assay.
Read the whole patent
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 August 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 2014.
- 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
Timeline From CIPO dates
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.