Dye composition for keratinic fibers using indolic colorant and at leastone paraphenylenediamine disubstituted on one of the amino group, and process for application

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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 February 27, 2001. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 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.