Hair shampoo-conditioner composition
CA 2065908 A1 · Owner: Helene Curtis, Inc. · Inventors: Brown, William J.; Hoshowski, Myra A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hair shampoo-conditioner composition including an anionic cleansing surfactant such as an, alkyl sulfate or an alkyl ether sulfate and a polymeric, conditioning compound having the formula: wherein n is a number in the range of from two to about 1000: m is a number in the range of from one to about 18; p and r are numbers in the range of from one to about four, in a suitable carrier, and having a pH of from about 2.5 to less than 7, to cleanse the hair to, generate a copious and stable foam volume and to impart improved wet stage and improved dry stage conditioning properties to the hair in a single application of the composition is disclosed.
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 April 13, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2014.
- 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.