Process for the preparation of materials with a high content of long chain polyunsaturated fatty acids
CA 2237883 C · Owner: Zwemmer, Olga Cornelia · Inventors: Cain, Frederick William; Mcneill, Gerald Patrick; Moore, Stephen Raymond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Organic materials, comprising a mixture of at least two products (I) and (II) both containing isomers of conjugated long chain polyunsaturated fatty acids moieties (L1) and (L2) can be obtained by subjecting an organic material, selected from free fatty acids mono-, di- or triglycerides, phospholipids alkylesters or wax-esters, containing at least 5 wt.% of these conjugated polyunsaturated fatty acids to, an enzymic conversion (acidolysis, alcoholysis esterification, hydrolysis) , using an enzyme that can be discriminated between (L1) and (L2) so that original ratio L1/L2 = X A in starting material is increased to X B wherein X B >= 1.1 X A.
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 November 12, 1996 and granted February 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2018.
- 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.