Hair care compositions
CA 2337165 C · Owner: Mccann, Chantelle Mary · Inventors: Mcmeekin, Anthony; Mccann, Chantelle Mary; Mckelvey, Graham Neil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the present invention them is provided a hair care composition comprising: (a) cationic saccharide polymer or copolymer wherein the cationic polymer has a charge density of greater than about 1.5 meq/g, preferably greater than about 1.6 meq/g more preferably, greater than about 1.7 meq/g even more preferably greater than about 1.8 meq/g; and (b) less than about 5 %, preferably less than about 2 %, more preferably less than about 1 % even more preferably 0 %, by weight, of anionic surfactant. The compositions of the present invention provide good conditioning/shine to the hair with reduced feelings of tackiness and greasiness.
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 March 26, 1999 and granted May 27, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2021.
- 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.