Composition extracted from plants used as an anti-oxidant
CA 2312255 A1 · Owner: Pegg, Ronald Bruce · Inventors: Pegg, Ronald Bruce; Barl, Banka; Amarowicz, Ryszard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antioxidant, particularly for use as a food preservative and a method of , extracting, it from the bearberry plant (Arctostaphylos uva-ursi) are disclosed. The method comprises, grinding the leaves of the bearberry mixing the ground leaves with ethanol, shaking the resulting slurry at 50°C, filtering the slurry evaporating the , supernatant to dryness and dechloraphyllyzing the resulting precipitate using a silicic acid column with hexane and, ethanol as the mobile phases.
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 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 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.