P

Inventor

DAVID HERVE

FR23 patents

Patents

23 patents
US7001436B2Feb 21, 2006

Dyeing composition for keratinous fibres comprising a particular dicationic diazo dye

OREAL61 citations96
US7060110B2Jun 13, 2006

Dyeing composition for dyeing keratinous fibres comprising a particular dicationic monoazo dye

OREAL51 citations92
US7077873B2Jul 18, 2006

Composition for the dyeing of human keratinous fibres comprising a monocationic monoazo dye

OREAL40 citations89
US7300471B2Nov 27, 2007

Composition comprising at least one mixed dye based on at least one chromophore of azo or tri(hetero) arylmethane type, dyeing process and mixed dyes.

OREAL14 citations84
US7247713B2Jul 24, 2007

Symmetrical diazo compounds containing 2-pyridinium groups and cationic or non-cationic linker, compositions comprising them, method of coloring, and device

OREAL11 citations84
US7399320B2Jul 15, 2008

Use of tetra-azapentamethine compounds as direct dyeing agents and novel tetra-azapentamethine compounds

OREAL17 citations82
US7311736B2Dec 25, 2007

Use of tetra-azapentamethine compounds as direct dyeing agents and novel tetra-azapentamethine compounds

OREAL17 citations82
US7303591B2Dec 4, 2007

Composition comprising at least one mixed dye comprising at least two chromophores of (hetero) aromatic nitro or cyclic azine type, dyeing process, and mixed dyes

OREAL8 citations74
US7288639B2Oct 30, 2007

Dyssymmetrical diazo compounds having at least one 4-pyridinium unit and a cationic or non-cationic linker, compositions comprising them, method of coloring, and device

OREAL9 citations73
US7288121B2Oct 30, 2007

Composition comprising at least one mixed dye comprising at least one chromophore chosen from compounds of the methine family and/or the carbonyl family, dyeing process and kit, and mixed dyes

OREAL5 citations63
US9839591B2Dec 12, 2017

Anionic dye or brightener bearing an ammonium or phosphonium counterion, dye composition comprising them and process for dyeing keratin fibres using these dyes

OREAL2 citations62
US7396368B2Jul 8, 2008

Symmetrical diazo compounds comprising 4-pyridinium groups and a cationic or non-cationic linker, compositions comprising them, method for coloring, and device

OREAL3 citations62
US7351267B2Apr 1, 2008

Symmetrical diazo compounds comprising 2-imidazolium groups and a non-cationic linke, compositions comprising them, method of coloring, and device

OREAL3 citations62
US7438728B2Oct 21, 2008

Dissymmetrical diazo compounds comprising 2-pyridinium group and a cationic or non-cationic linker, compositions comprising them, method for coloring, and device

OREAL2 citations52
US7410506B2Aug 12, 2008

Dicationic bis-hydrazone compound, dye composition comprising at least one such compound, implementation process therefor and uses thereof

OREAL2 citations52
US7282068B2Oct 16, 2007

Polycationic azo compounds for dyeing keratin fibers, dye composition containing the same, and methods for making such compounds

OREAL0 citations52
US7208586B2Apr 24, 2007

Cationic diazo compounds, compositions comprising them as direct dye, process for dyeing keratin fibers and device therefor

OREAL2 citations52
US7988741B2Aug 2, 2011

Specific naphthalmide-type dyes, dye composition comprising at least one such dye, process using same and uses

OREAL1 citations49
US7288122B2Oct 30, 2007

Cationic diazo compounds, compositions comprising them as direct dye, process for dyeing keratin fibers and device therefor

OREAL0 citations41
US7285138B2Oct 23, 2007

Cationic diazo compound, compositions comprising at least one cationic diazo compound as a direct dye, a process for dyeing keratin fibers and device therefore

OREAL0 citations41
US7282069B2Oct 16, 2007

Cationic diazo compounds, compositions comprising them as direct dye, process for dyeing keratin fibers and device therefor

OREAL0 citations41
US8012220B2Sep 6, 2011

Specific monocationic monochromophoric compounds of hydrazone type comprising a 2-, 4-pyridinium or 2-, 4-quinolinium unit, synthesis thereof, dye compositions containing them, and method for dyeing keratin fibres

OREAL0 citations35
US7569079B2Aug 4, 2009

Polycationic monochromophoric hydrazone compounds, dye compositions comprising such polycationic compounds and dyeing process using them

OREAL0 citations32