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Expired Canadian patentCanada

A process for decreasing the amount of cholesterol in a marine oil using a volatile working fluid

CA 2492720 C · Owner: Thorstad, Olav · Inventors: Sondbo, Sverre; Thorstad, Olav

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a process for decreasing the amount of cholesterol in a mixture comprising a marine oil, the marine oil containing the cholesterol which process comprises the steps of adding a volatile working fluid to the mixture, where the volatile working fluid comprises at least one of a fatty acid ester, a fatty acid amide and a hydrocarbon and subjecting the mixture , with the added volatile working fluid to at least one stripping processing step, in which an amount of cholesterol present in the marine oil in free form is separated from the mixture together with the volatile working fluid. The present invention also relates to a volatile cholesterol decreasing working …

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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 July 11, 2003 and granted August 25, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 11, 2003
GrantedAugust 25, 2015
Term endedJuly 11, 2023
Patent numberCA 2492720 C
Classification (IPC)C11B3/14 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJuly 11, 2003Patent grantedAug 25, 2015Term endedJuly 11, 2023

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.