Issued Patents All Time
Showing 76–100 of 105 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4981486 | Nitro benzene dye, the process for preparation thereof and its use in dyeing keratinous fibres | Jean F. Grollier, Jean Cotteret, Alain Genet | 1991-01-01 |
| 4979961 | p-phenylenediamines, process for preparation thereof, dyeing composition containing them and corresponding dyeing process | Alain Genet, Gerard Lang | 1990-12-25 |
| 4973757 | Process for the preparation of nitroanilines | Andree Bugaut | 1990-11-27 |
| 4960432 | Meta-phenylenediamines, process for preparation thereof, intermediate compounds and use of these meta-phenylenediamines as couplers for the oxidation dyeing of keratinous fibres and especially human hair | Jean J. Vandenbossche, Herve Borowiak, Gerard Lang | 1990-10-02 |
| 4956174 | Compositions for coloring the skin based on indole derivatives | Gerard Lang, Herve Richard, Madeleine Leduc | 1990-09-11 |
| 4954131 | Substituted metaaminophenols, a process for their preparation, hair-dyeing compositions containing them and a hair-dyeing process | Andree Bugaut | 1990-09-04 |
| 4910341 | Process for preparing N,N'-disubstituted nitro-para-phenylenediamines, N,N'-disubstituted nitro-para-phenylenediamines, and intermediate oxazolidones | Gerard Lang | 1990-03-20 |
| 4904276 | Nitroaminophenols, the process for preparation thereof and their use in dyeing keratinous fibres, and new intermediate nitroaminobenzenes and their use in dyeing keratinous fibres | Gerard Lang, Alain Genet | 1990-02-27 |
| 4891045 | 2,4-Diamino-1,3,5-trimethoxybenzene, process for its preparation and its use as a coupler in oxidation dyes for keratinous fibres | Jean J. Vandenbossche, Herve Borowiak, Gerard Lang | 1990-01-02 |
| 4888445 | New 2,4-dinitro- or 2-amino-4-nitro- or 2-nitro-4-amino-6-hydroxyalkylanilines, the process for preparation thereof and their use in dyeing keratinous fibres, and especially human hair | Gerard Lang, Nicole Jehanno | 1989-12-19 |
| 4886517 | Dyeing composition for human hair containing an azo dye | Andree Bugaut, Jean Cotteret | 1989-12-12 |
| 4865617 | Dyeing compositions for keratinous fibres, especially for human hair, containing oxidation dye precursors and heterocyclic couplers | Alain Genet, Gerard Lang | 1989-09-12 |
| 4865618 | New chloro-meta-phenylenediamines, their use as couplers in the oxidation dyeing of keratinous fibres, dyeing compositions for hair containing these compounds and dyeing process using the said | Jean J. Vandenbossche, Herve Borowiak, Gerard Lang | 1989-09-12 |
| 4865619 | Use, as a coupler, of 2,4-diamino-1,3-dimethoxybenzene or one of its salts, in combination with oxidation dye precursors, for dyeing human hair, hair dyeing composition containing the said coupler and process for preparing the said coupler | Jean J. Vandenbossche, Herve Borowiak, Gerard Lang | 1989-09-12 |
| 4863482 | Substituted 2-nitro metaphenylenediamines, a process for their preparation and their use in dyeing keratinous fibers, in particular human hair | Nicole Jehanno, Gerard Lang | 1989-09-05 |
| 4863480 | Substituted metaaminophenols, a process for their preparation, hair dyeing compositions containing them and a hair-dyeing process | Andree Bugaut | 1989-09-05 |
| 4845293 | Dyeing composition containing halogenated 2-nitroanilines | Gerard Lang, Nicole Jehanno, Jean J. Vandenbosche | 1989-07-04 |
| 4822375 | Dyeing compositions for keratinous fibres based on indole derivatives, and new compounds | Gerard Lang, Herve Richard, Madeleine Leduc | 1989-04-18 |
| 4797129 | Dye compositions for keratinous fibres containing 2-nitro-metaphenylenediamines | Gerard Lang, Nicole Jehanno, Jean J. Vandenbosche | 1989-01-10 |
| 4749379 | Nitroaminophenols and their use in dyeing keratinous fibres. | Gerard Lang, Alain Genet | 1988-06-07 |
| 4740622 | 3-amino-4-nitrophenols, the process for preparation thereof and their use in dyeing keratinous fibres, and new intermediate 4,5-dinitrophenols | Gerard Lang, Alain Genet | 1988-04-26 |
| 4736067 | New dimethyl derivatives of 3-nitro-4-aminoaniline, process for their preparation and their use for dyeing keratinic fibers | Andree Bugaut, Alain Genet, Jean Cotteret | 1988-04-05 |
| 4727192 | 2,4-dinitro- or 2-amino-4-nitro- or 2-nitro-4-amino-6-hydroxyalkylanilines, the process for preparation thereof and their use in dyeing keratinous fibers, and especially human hair | Gerard Lang, Nicole Jehanno | 1988-02-23 |
| 4725283 | Dyeing compositions for keratinic fibres, based on halogenated meta-phenylenediamines | Jean Cotteret, Gerard Lang | 1988-02-16 |
| 4702863 | Indoaniline and indophenol compounds, a process for their preparation, dyeing compositions containing them and a hair-dyeing process | Andree Bugaut | 1987-10-27 |