Hervé David
27Patents
6h-index
14Co-inventors
62Inventor score
Filing activity: Apr 3, 2002 → Jun 18, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7060110B2 | Dyeing composition for dyeing keratinous fibres comprising a particular dicationic monoazo dye | Chemistry; Metallurgy | 29 | Expired |
| US7001436B2 | Dyeing composition for keratinous fibres comprising a particular dicationic diazo dye | Chemistry; Metallurgy | 28 | Expired |
| US7077873B2 | Composition for the dyeing of human keratinous fibres comprising a monocationic monoazo dye | Chemistry; Metallurgy | 18 | Expired |
| US7399320B2 | Use of tetra-azapentamethine compounds as direct dyeing agents and novel tetra-azapentamethine compounds | Chemistry; Metallurgy | 16 | Active |
| US7311736B2 | Use of tetra-azapentamethine compounds as direct dyeing agents and novel tetra-azapentamethine compounds | Chemistry; Metallurgy | 16 | Expired |
| US7300471B2 | 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. | Human Necessities | 14 | Expired |
| US7247713B2 | Symmetrical diazo compounds containing 2-pyridinium groups and cationic or non-cationic linker, compositions comprising them, method of coloring, and device | Chemistry; Metallurgy | 5 | Expired |
| US7303591B2 | 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 | Human Necessities | 4 | Expired |
| US7288121B2 | 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 | Textiles; Paper | 3 | Expired |
| US7288639B2 | 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 | Human Necessities | 2 | Expired |
| US7410506B2 | Dicationic bis-hydrazone compound, dye composition comprising at least one such compound, implementation process therefor and uses thereof | Human Necessities | 1 | Active |
| US9839591B2 | Anionic dye or brightener bearing an ammonium or phosphonium counterion, dye composition comprising them and process for dyeing keratin fibres using these dyes | Human Necessities | 1 | Active |
| US7208586B2 | Cationic diazo compounds, compositions comprising them as direct dye, process for dyeing keratin fibers and device therefor | Human Necessities | 1 | Expired |
| US7988741B2 | Specific naphthalmide-type dyes, dye composition comprising at least one such dye, process using same and uses | Chemistry; Metallurgy | 1 | Active |
| US7351267B2 | Symmetrical diazo compounds comprising 2-imidazolium groups and a non-cationic linke, compositions comprising them, method of coloring, and device | Chemistry; Metallurgy | 0 | Active |
| US10888510B2 | Process for dyeing keratin fibres using at least one particular 2- or 4-azopyridinium dye and at least one fluorescent dye | Human Necessities | 0 | Active |
| US7569079B2 | Polycationic monochromophoric hydrazone compounds, dye compositions comprising such polycationic compounds and dyeing process using them | Chemistry; Metallurgy | 0 | Active |
| US8012220B2 | 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 | Chemistry; Metallurgy | 0 | Active |
| US7396368B2 | Symmetrical diazo compounds comprising 4-pyridinium groups and a cationic or non-cationic linker, compositions comprising them, method for coloring, and device | Chemistry; Metallurgy | 0 | Active |
| US10959930B2 | Process for dyeing keratin fibres using at least one particular triarylmethane dye and at least one fluorescent dye | Human Necessities | 0 | Active |
| US7282069B2 | Cationic diazo compounds, compositions comprising them as direct dye, process for dyeing keratin fibers and device therefor | Chemistry; Metallurgy | 0 | Expired |
| US7438728B2 | Dissymmetrical diazo compounds comprising 2-pyridinium group and a cationic or non-cationic linker, compositions comprising them, method for coloring, and device | Human Necessities | 0 | Active |
| US7288122B2 | Cationic diazo compounds, compositions comprising them as direct dye, process for dyeing keratin fibers and device therefor | Chemistry; Metallurgy | 0 | Expired |
| US11278482B2 | Process for dyeing keratin materials using at least one blue, purple or green dye and at least one disulfide, thiol or protected thiol fluorescent dye | Human Necessities | 0 | Active |
| US7285138B2 | Cationic diazo compound, compositions comprising at least one cationic diazo compound as a direct dye, a process for dyeing keratin fibers and device therefore | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.