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Laurent Vidal, Agnes Burande, Gerard Malle, Michel Hocquaux: Composition for dyeing keratin fibers which contain at least one diaminopyrazole, dyeing process, novel diaminopyrazoles and process for their preparation. L Oreal, Finnegan Henderson Farabow Garrett & Dunner L, August 8, 2000: US06099592 (211 worldwide citation)

The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.


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Laurent Vidal, Agnès Burande, Gérard Malle, Michel Hocquaux: Composition for dyeing keratin fibers which contain at least one diaminopyrazole, dyeing process, novel diaminopyrazoles and process for their preparation. L&apos Oreal, Finnegan Henderson Farabow Garrett & Dunner L, November 11, 2003: US06645258 (178 worldwide citation)

The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.


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Laurent Vidal, Agnès Burande, Gérard Malle, Michel Hocquaux: Composition for dyeing keratin fibers which contain at least one diaminopyrazole, dyeing process, novel diaminopyrazoles and process for their preparation. L&apos Oreal, Finnegan Henderson Farabow Garrett & Dunner L, January 15, 2002: US06338741 (153 worldwide citation)

The invention relates to novel compositions for the oxidation dyeing of keratin fibers, comprising at least one specific diaminopyrazole derivative, to the dyeing process using this composition, to novel diaminopyrazole derivatives and to a process for their preparation.


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Laurent Vidal, Madeleine Leduc: Dyeing composition for dyeing keratinous fibers comprising at least one particular dicationic diazo dye. L Oreal, Finnegan Henderson Farabow Garrett & Dunner, April 26, 2005: US06884265 (55 worldwide citation)

The invention concerns a novel dyeing composition for dyeing keratinous fibers, in particular human hair, comprising a dicationic diazo dye of formula (I): W1—W2—N═N—W3—L—W4—N═N—W5—W6, as well as the dyeing method using said composition and the novel compounds of formula (I).


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Laurent Vidal, Aziz Fadli: Composition for dyeing keratinous fibers comprising at least one diamino-N,N-dihydropyrazolone derivative. L Oreal, Finnegan Henderson Farabow Garrett & Dunner L, October 23, 2007: US07285137 (49 worldwide citation)

Disclosed herein are a composition for dyeing keratinous fibers, for example, human keratinous fibers such as hair, comprising at least one oxidation base chosen from diamino-N,N-dihydropyrazolone derivative and a method using the composition. Further disclosed herein are amino-N,N-dihydropyrazolone ...


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Laurent Vidal: Dyeing composition for keratinous fibers comprising a particular dicationic diazo dye. L Oreal, Finnegan Henderson Farabow Garrett & Dunner, May 17, 2005: US06893471 (28 worldwide citation)

The invention concerns a dyeing composition for dyeing keratinous fibers, in particular human keratinous fibers and more particularly hair, comprising a dicationic diazo dye of formula W1—N═N—W2—N═N—W3 as well as the dyeing method using same and the novel compounds of formula (I).


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Laurent Vidal, Hervé David: Dyeing composition for keratinous fibres comprising a particular dicationic diazo dye. L Oreal, Finnegan Henderson Farabow Garrett & Dunner, February 21, 2006: US07001436 (27 worldwide citation)

The invention concerns a dyeing composition for keratinous fibres, in particular human keratinous fibres and more particularly hair, comprising a dicationic diazo dye of formula (I), as well as the dyeing composition using same. The invention also concerns the novel compounds of formula (I).


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Laurent Vidal, Aziz Fadli: Dyeing composition for dyeing keratinous fibers comprising a cationic azo-dye. L Oreal, Finnegan Henderson Farabow Garrett & Dunner L, April 4, 2006: US07022143 (24 worldwide citation)

The invention concerns a novel dyeing composition for dyeing keratinous fibers, in particular human hair, comprising a cationic azo-dye of formula (I): W1—N═N—W2—W3, as well as the dyeing method using said composition and the novel compounds of formula (I).


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Laurent Vidal: Dyeing composition for dyeing keratinous fibers comprising a cationic azo-dye. L Oreal, Finnegan Henderson Farabow Garrett & Dunner L, April 19, 2005: US06881230 (24 worldwide citation)

The invention concerns a novel dyeing composition for dyeing keratinous fibers, in particular human hair, comprising a cationic azo-dye of formula (I): W1-N═N-W2-W3, as well as the dyeing method using said composition and the novel compounds of formula (I).


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