Undecylenic acid derivatives with hydrophilic molecules and utilizations in cosmetics or in pharmacy
CA 2134346 A1 · Owner: Antoni, Danielle · Inventors: Huc, Alain R.; Perrier, Eric J.; Antoni, Danielle
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PATENT, Undecylenic acid derivatives with hydrophilic molecules and utilizations in cosmetics or in pharmacy COLETICA, ABSTRACT OF THE DISCLOSURE, The invention relates to undecylenic acid derivatives characterized in that they are the product obtained from the reaction of undecylenic acid with a hydrophilic organic macromolecule having primary alcohol and/or primary amine groups. Conveniently the, reaction product is further subjected to a lyophilization step. Said derivatives have anti-sudation anti-, dandruff, anti-acne activities and can also be a main or auxiliary preservative and emulsioning agent in cosmetic 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 April 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2015.
- 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.