Chimaeric interleukin 5-receptor/immunoglobulin polypeptides
CA 2078384 A1 · Owner: Fiers, Walter · Inventors: Devos, Rene; Fiers, Walter; Tavernier, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RAN4105/144, Abstract, The present invention is directed to a DNA sequence comprising two partial DNA sequences, one partial sequence coding for a fragment of the .alpha.- and/or the .beta.-chain of the human interleukin-5 receptor which fragment or combination of fragments binds human interleukin-5 and the other partial sequence coding for the constant domains of a heavy- or a light chain of a human immunoglobulin such as IgG IgA, IgM or IgE or a part thereof, a vector comprising such a DNA sequence, a pro- or eukaroytic host cell transformed with such a vector, a recombinant protein coded for by such a DNA sequence a, process for the preparation of such recombinant protein and a …
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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 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.