Compositions and methods for removing minerals from hair
CA 2125691 C · Owner: Vitachlor Corporation · Inventors: Ault, Frederick K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for use in removal of minerals from hair is disclosed herein which comprises the combination of an acidifying agent, a reducing agent, a chelating agent a gelling agent and water. A , synergistic combination of chelating agents is disclosed. Also disclosed herein is a process for packaging the inventive compositions, and a method for removal of mineral residues from hair by use of compositions as 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 December 11, 1992 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 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.