Cosmetic compositions for the skin and/or hair photoprotection which are based on a sinergic mixture of filters, and uses thereof
CA 2194798 C · Owner: L'Oreal · Inventors: Pisson, Anne-Marie; Ascione, Jean-Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new cosmetic compositions for topical use particularly for the skin and/or hair photoprotection characterized in that they comprise in a cosmetically acceptable support, particularly of the type oil-in-water (i) benzene 1-4-di(3-methylidene-10-camphosulfonic) acid optionally in a partially or totally neutralised form as a first filter, and (ii) as second filter an appropriately selected benzotriazol silicone. Due to a synergy effect between said first and second filters said compositions have improved solar protection factors. Application to the skin and hair protection against the effects of ultraviolet radiation.
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 23, 1996 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 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.