Labiatae derived antioxidants and a process for extracting antioxidants from labiatae herbs
CA 2040816 C · Owner: Nguyen, Uy · Inventors: Evans, David A.; Frakman, Grigory; Nguyen, Uy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antioxidant composition obtained from the supercritical fluid carbon dioxide extraction of a Labiatae family herb has at least 30% by weight carnosic acid and less than 5 ml water distillable essential oil per 100 grams. The composition is substantially free of organic solvent and is soluble in food-grade oils and grain alcohol. The composition provides an antioxidant activity comparable to that of BHA and BBT.
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 April 19, 1991 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2013.
- 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.