Naphthylisoquinoline alkaloids, pharmaceutical compositions containing them and their use for the treatment of malaria
CA 2183155 C · Owner: The United States Of America, Represented By The Secretary, Department Of Health And Human Services · Inventors: Francois, Guido; Timperman, Georges; Phillipson, J. David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides antimalarial pharmaceutical compositions containing antimalarial naphthylisoquinoline alkaloids or antimalarial derivatives thereof, useful new antimalarial naphthylisoquinoline alkaloid derivatives, methods for obtaining such derivatives, and methods of using such antimalarial compounds for the prevention of malarial infections in mammals and for treating mammals with malarial infections. The novel antimalarial compounds of the present invention are selected from the group consisting of a compound selected from the group consisting of derivatives of dioncophylline B, dioncolactone A dioncopeltine A, dioncophylline A, dioncophylline C ancistrobrevine D, …
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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 September 9, 2003. 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
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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.