Hair conditioning compositions
CA 2242748 C · Owner: Featherston, John Paul · Inventors: Raney, David Jr.; Dodd, Michael Thomas; Featherston, John Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided are leave-on hair care compositions which can impart enhanced hair conditioning and damage protection, while being formulated in a low viscosity product. In particular, the atomizible leave-on hair care composition comprise: (i) from about 0.1 % to about 10 % by weight, of a cationic cross-, linked polymeric conditioning agent comprising the monomer units (A)m(B)n(C)p and a cross-linking agent wherein: (A) is a dialkylaminoalkyl acrylate monomer or a quaternay ammonium or acid addition salt thereof; (B) is a dialkylaminoalkyl methacrylate monomer or a quaternary ammonium or acid addition salt thereof; (C) is a nonionic monomer polymerizable with (A) or (B); m, n and p are …
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 January 10, 1997 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.