Process for the preparation of extracts having high content in anthocyanosides
CA 2022962 C · Owner: Idb Holding S.P.A. · Inventors: Gabetta, Bruno; Zini, Gianfranco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of extracts with high content in anthocyanosides consists in treating plants, parts of plants or crude extracts with bisulfate ions to give anthocyanoside-bisulfate adducts. Said adducts are then-eluted on non-ionogenic resins at pH 5-6 and the obtained solution is extracted with polar organic solvents immiscible in water. The obtained extracts have a constant and standardized composition in anthocyanosides.
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, 1990 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2012.
- 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.