Composition for treating keratinous material, including at least one silicone-grafted polymer and at least one thickening polymer or copolymer of (meth)acrylamide or a (meth)acrylamide derivative, and uses thereof
CA 2222309 C · Owner: Cauwet-Martin, Daniele · Inventors: Cauwet-Martin, Daniele; Dubief, Claude; Dupuis, Christine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cosmetic or dermatological composition for treating keratinous material particularly human hair, including a cosmetically or dermatologically acceptable medium containing at least one silicone-grafted polymer with a polysiloxane portion and a portion consisting of a non-silicone organic chain wherein one of the two portions constitutes the main polymeric chain while the other is grafted onto said main chain and at least one optionally cross-linked thickening polymer or copolymer of (meth)acrylamide or a (meth)acrylamide derivative as well as the uses thereof, are disclosed. Such compositions are particularly suitable for use as rinsable or non-rinsable products for washing and …
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 September 16, 1996 and granted April 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.