Antimicrobial lees
CA 2379509 A1 · Owner: Shanbrom Technologies Llc · Inventors: Shanbrom, Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The lees or "dregs" produced during wine making are rich sources of antioxidants. Unexpectedly, these materials show significant antibacterial properties as well as antioxidant properties. The lees of red wine which consist of tannins and plant pigments precipitated around crystals of potassium tartarate can advantageously be used directly as a tonic or demulcent. The material can also be used topically for disinfecting the skin etc. In addition, it is possible to use organic polymers to bind the pigments and/or solubilize them from the tartaric salt to facilitate their use or to make a relatively pure pigment/tannin component.
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 August 9, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 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.