Method of increasing hair shine and repairing alkaline-damaged hair
CA 2105813 C · Owner: Patel, Chaitanya · Inventors: Patel, Chaitanya; Hoshowski, Myra A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating hair that has been damaged and/or dulled as a result of an alkaline hair treatment including contacting the hair with a solution of weak acid having a pH in the range of about 2.0 to about 5.0 preferably about 2.0 to about 3.8 and having at least 0.75 milliequivalent of free acid per milliliter of solution to restore natural shine to the dulled hair and to repair uplifted cuticles if any, that have resulted from the alkaline hair treatment.
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 September 9, 1993 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2015.
- 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.