Artemisinin derivatives, method for the preparation thereof and pharmaceutical compositions containing the same
CA 2342990 A1 · Owner: Adir Et Compagnie · Inventors: Atassi, Ghanem; Shan, Feng; Wu, Jin Ming
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to compounds of the general formula (I): R - O - A wherein R represents the radical of formula (II) and A is as defined in the description. The invention also relates to the geometric and/or optic isomers thereof and to the pharmaceutically acceptable acid or basic addition salts thereof.
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 June 9, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 9, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 2021.
- 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.