Tanacetum parthenium extract
CA 2375910 C · Owner: Bombardelli, Ezio · Inventors: Morazzoni, Paolo; Bombardelli, Ezio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Extracts of Tanacetum parthenium with a reduced content of .alpha.-unsaturated .gamma.-lactons, particularly of parthenolide obtainable by elution on basic , resins. The extracts of the invention have favourable pharmacological properties together with reduced risks of allergic reactions.
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 May 31, 2000 and granted November 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2022.
- 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.