High lather styling shampoos
CA 2230868 C · Owner: Wells, Robert Lee · Inventors: Wells, Robert Lee; Behrens, Jon Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to hair shampoo compositions which have improved cleansing, lathering, and styling benefits. These shampoo compositions comprise an alkyl glyceryl ether sulfonate surfactant a hair styling polymer, a non-polar volatile solvent and water. These compositions are useful for cleansing the hair and for providing a hair styling benefit.
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 August 22, 1996 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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.