US Patent 7211119 Coupling components

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Patent Jurisdiction

Patent Number

Patent Inventor Names

Horst Hoeffkes0

Ralph Nemitz0

George Knuebel0

Date of Patent

May 1, 2007

Patent Application Number

111650010

Date Filed

June 23, 2005

Patent Primary Examiner

Patent abstract

Keratin fibers are colored by an agent comprising a coupler which is a m-phenylenediamine derivative of the formula (I)

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