Shampoo composition
CA 2017672 C · Owner: Reid, Euan Stuart · Inventors: Reid, Euan Stuart; Hitchen, David Andrew; Forster, Deborah Jane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shampoo composition comprising in addition to water, (a) from 2 to 40% by weight of surfactant chosen from anionic, nonionic or amphoteric, surfactants or mixtures thereof;, (b) from 0.01 to 10% by weight of insoluble non-volatile silicone;, (c) from 0.5 to 5% by weight of suspending agent chosen from polyethylene glycol mono- or diesters of C16-22 fatty acid, having from 2 to 7 ethylene oxide groups. The composition may further comprise a cationic conditioning agent.
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 May 28, 1990 and granted December 20, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2012.
- 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.