Use in cosmetics of flexible skeleton copolymers grafted by rigid hydrophobic macromonomers; compositions prepared
CA 2209462 A1 · Owner: Mougin, Nathalie · Inventors: Mougin, Nathalie; Lion, Bertrand; Mondet, Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention involves the use of a grafted copolymer in and for the preparation of cosmetic or dermatological compositions. The skeleton (S) of the copolymer consists of a copolymer having a vitreous transition temperature Tg ranging from 0 to 30°C which can be obtained by radical polymerization or polycondensation including on the skeleton (S) chain at least one graft consisting of a hydrophobic macromonomer (M) and having a vitreous transition temperature Tg higher than 25°C and the cosmetic or dermatological compositions prepared.
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 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2019.
- 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.