Anhydrous cosmetic compositions containing tio2 nanopigments and flexible hollow microspheres
CA 2224481 C · Owner: Guillemot, Laure · Inventors: Ribery, Delphine; Hansenne, Isabelle; Guillemot, Laure
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel topical anhydrous composition particularly useful for protecting skin and/or hair from ultraviolet radiation and the use thereof in cosmetics, are disclosed. The composition comprises a cosmetically acceptable carrier consisting of a fatty phase and containing at least one titanium oxide nanopigment and flexible hollow microspheres of an expanded vinylidene chloride-acrylonitrile or vinylidene chloride-acrylonitrile-methacrylate copolymer.
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 June 14, 1996 and granted March 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 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.