Method for lightening and permanently coloring hair
CA 1331143 C · Owner: Shami, Farouk M. · Inventors: Shami, Farouk M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and composition for lightening and imparting color to hair is disclosed which achieves a more permanent or longer lasting effect than achievable with traditional oxidation type dyes. A bleaching agent which is capable of lightening hair to a predetermined degree and a non-, oxidation type colorant which is capable of imparting a permanent color is applied to hair for a sufficient length of time and in a sufficient amount to achieve the desired result. The bleaching agent and colorant are then rinsed from the hair.
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
- Granted August 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 2011.
- 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.