Process for preparing flavourings and perfumes based on one or more carotenoids as starting material
CA 2017407 C · Owner: Quest International B.V. · Inventors: De Heij, Johannes T.; Renes, Harry; Van Dort, Johannes M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a process for preparing flavouring and perfume complexes by converting one or more carotenoids like carotenes xanthophylls, etc. into a reaction product with organoleptic properties in the presence of a liquid solvent or liquid suspension medium containing an oxygen-containing gas at a temperature in the 20-250°C range under a pressure of not more than 400 bar. The obtained products - optionally after a complete or partial removal of the solvent or suspension medium - may be used for the direct or indirect perfuming and flavouring respectively of materials.
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 23, 1990 and granted November 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 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.