Composition resulting from the combination of the glycoprotein coat epitoque b of a type iv retrovirus and of an epitope t from a separate protein coded with this retrovirus, and their application for the production of protectors c antibodies for aids

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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 August 17, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2010.
• A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2012.
• We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.