Oil-soluble pigment compositions
CA 2486424 A1 · Owner: Leigh, Mathew Louis Steven · Inventors: Tiemessen, Henricus; Van Hoogevest, Peter; Leigh, Mathew Louis Steven
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for the preparation of an oily solution of a carotenoid, particularly astaxanthin a composition comprising , at least one xanthophyll and at least one suitable solvent particularly n-, methyl-pyrrolidone, a composition comprising a carotenoid and a mixture of mono-, di- and triglycerides subjected to enzyme treatment glycerolysis , and/or fractionation, and a solid homogeneous mixture comprising one xanthophyll in a physiologically acceptable amount and at least one lipophilic dispersing agent. The process is useful for preparing nutrient or pharmaceutical compositions.
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 May 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.
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.