Method for extracting unsaponifiable matters from vegetable oils using chloro-1-butane, composition containing said unsaponifiable matters
CA 2396989 C · Owner: Legrand, Jacques · Inventors: Piccirilli, Antoine; Legrand, Jacques; Bardet, Sandrine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for extracting usaponifiable matters from a vegetable oil comprising at least a saponification step whereby the oil is transformed into a hydroalcoholic solution an step for extracting the hydroalcoholic solution with an organic solvent such as chloro-1-butane preferably the treated vegetable oil is avocado or soya oil.
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 January 9, 2001 and granted August 2, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 9, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2023.
- 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.