Process for extracting and purifying lignans and cinnamic acid derivatives from flaxseed
CA 2216979 C · Owner: Muir, Alister D. · Inventors: Muir, Alister D.; Westcott, Neil D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is described for extracting secoisolariciresinol diglycoside (SDG) and cinnamic acid derivatives from flaxseed which comprises contacting a substantially oil-free flaxseed meal with an aliphatic alcohol solvent e.g. a , mixture of methanol or ethanol with water to extract phenolics comprising SDG , and cinnamic acid derivatives into the alcohol solvent and separating residual solids from the phenolic-rich alcohol solvent. The phenolic-rich alcohol solvent is concentrated by removing solvent therefrom and the phenolic-rich extract obtained is subjected to a base-catalyzed hydrolysis to liberate lignans and cinnamic acid derivatives therefrom in a non-complexed form. …
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 March 29, 1996 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2018.
- 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.