Cosmetic or dermatological use of vitamin a or the esters thereof in combination with a partly methylated beta-cyclodextrin
CA 2474717 A1 · Owner: Lvmh Recherche · Inventors: Archambault, Jean-Christophe; Djedaieni-Pilard, Florence; Ouvrard-Baraton, Francoise
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the use of dimethylated .beta.-cyclodextrins particularly DIMEB and RAMEB, as agents promoting the penetration of vitamin A or the cosmetically or dermatologically acceptable esters thereof into the epidermis and the retention thereof in the skin for preparing a cosmetic or , dermatological composition containing a combination of vitamin A or at least one of the cosmetically or dermatologically acceptable esters thereof and said dimethylated .beta.-cyclodextrins. The invention also relates to new cosmetic or dermatological compositions containing said combinations of dimethylated .beta.-cyclodextrins and vitamin A or vitamin A esters particularly in the , form …
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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 January 31, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 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.