Antimalarial korupensamines and pharmaceutical compositions and medical uses thereof
CA 2183247 C · Owner: Bringmann, Gerhard · Inventors: Cardellina, John H. Ii; Bringmann, Gerhard; Manfredi, Kirk P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides new antimalarial compounds called korupensamines korupensamine derivatives, and pharmacologically acceptable salts thereof, methods for isolating such antimalarial korupensamines from the plant Ancistrocladus korupensis methods for, obtaining new korupensamine derivatives antimalarial compositions containing such antimalarial korupensamines or derivatives thereof or pharmacologically acceptable salts thereof and methods of using such antimalarial compounds for the prevention of malaria infections or for treating mammals with mammals infections. The antimalarial compounds of the present invention inhibit the reproduction and cytopathicity of Plasmodium sp. …
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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 February 13, 1995 and granted August 17, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2017.
- 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.