Degumming process for plant oils
CA 2049720 C · Owner: Peredi, Jozsef · Inventors: Csernitzky, Karoly; Chikany, Bela; Ruzics, Anna Fabicsne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of removing gums which cannot be removed by simple water degumming from plant oils having the following steps: (a) adding to a plant oil containing gum substances not hydratable with water and wax substances substantially 0.01 to, 0.08% of a food acid or an acid anhydride of a food acid in a 5 to 15% solution thereof at a temperature of 20 to 70°C intimately, mixing the oil and the solution and causing the oil and the solution to remain in contact for a contact time in excess of 5 minutes with slow stirring:, (b) to a mixture formed in step (a) adding a 1 to 5% solution of a base at a temperature of 10 to 40°C in an amount between 40 and 150% of the amount stoichiometrically …
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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 22, 1991 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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.