| Patents for C09B 55 - Azomethine dyes (1,049) |
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| 03/13/1990 | US4908437 Thien-2-one compounds with an alkylidene or imino group in the 5-position of the ring |
| 02/08/1990 | WO1990000978A1 A heat sensitive recording element and a thermographic method |
| 02/07/1990 | EP0353868A2 Phenalenimine fluorescent dyes and their use in analytical compositions, elements and methods |
| 01/24/1990 | EP0351588A2 Colour-photographic recording material |
| 01/10/1990 | EP0350254A2 Reducible compounds which provide leuco dyes, and analytical compositions, elements and methods containing same |
| 01/10/1990 | EP0350253A2 Reducible compounds which provide aniline dyes, and analytical compositions, elements and methods using same |
| 10/17/1989 | US4874848 Asymmetrical polyazo chromium complex dyes comprising resorcinol as a coupling component |
| 07/18/1989 | US4849306 Dry toners containing methinefanal pigments |
| 06/28/1989 | EP0322003A2 Azomethine dye derived from a compound having a pyrazolo triazole moiety |
| 06/28/1989 | EP0321923A2 Infrared absorbing cyanine dyes for dye-donor element used in laser-induced thermal dye transfer |
| 06/13/1989 | US4839274 Novel polymethine dyes and UV absorbers containing a triarylborylisocyano group and imaging compositions containing these dyes |
| 06/13/1989 | US4839260 Novel polymethine dyes and UV absorbers and imaging materials for their use |
| 04/11/1989 | US4820632 Agent and process for the detection of redox systems |
| 01/24/1989 | US4799933 Colorfast mixture of a yellow and red dye and a gray; chromium-metallized azo or azo-methine dyes |
| 01/04/1989 | EP0297872A2 Novel polymethine dyes and UV absorbers and imaging materials for their use |
| 01/04/1989 | EP0297871A2 Novel polymethine dyes and UV absorbers and imaging materials for their use |
| 11/23/1988 | EP0292433A2 Cationic compounds |
| 11/23/1988 | EP0291853A2 Thienon compounds |
| 11/09/1988 | EP0156768B1 Process for the preparation of 1:2 chromium complex dyes |
| 11/08/1988 | CA1244459A1 Process for the photochemical stabilization of undyed and dyed material of polyamide fibres and of mixtures of these with other fibers |
| 10/25/1988 | US4780531 Dichoric dye for color liquid crystals having halogen substituted in perylene structure |
| 10/12/1988 | EP0285782A1 Dry toners containing methine fanal pigments |
| 10/05/1988 | EP0285000A2 Chromogene compounds, their manufacture and use as enzyme substrates |
| 08/17/1988 | EP0278910A2 Heavy metal complex dyestuffs, their preparation and their use |
| 07/12/1988 | US4756973 Photochromic lens |
| 06/15/1988 | EP0271063A2 Pyrazoloazoleazomethine dyes |
| 03/23/1988 | EP0260557A2 Asymmetric 1:2 metal complex dyestufs |
| 02/04/1988 | DE3724981A1 Optischer informationsaufzeichnungstraeger Optical informationsaufzeichnungstraeger |
| 10/08/1987 | DE3710570A1 Pigment mixtures of bisazomethine nickel complexes |
| 09/08/1987 | US4692529 Method for synthesizing a magenta coupler by selectively etherifying 4-hydroxy-5-pyrazolone |
| 08/05/1987 | EP0231147A2 Process for the trichromatic dyeing of leather |
| 07/14/1987 | US4680385 Metal dye complexes containing an azo or azomethine dye and a colorless ligand with the C═N--N═C group |
| 06/24/1987 | EP0226197A2 Hair-dyeing compositions with direct-dyeing azomethine dyes |
| 06/19/1987 | DE3642927A1 Asymmetric 1:2 chromium complex dyes |
| 04/28/1987 | US4661587 For polyamides, polyurethanes, leather |
| 04/07/1987 | US4655785 Process for photochemical stabilization of polyamide and polyurethane fiber materials with metal complex compounds |
| 03/24/1987 | US4652631 Bis 1:2 chromium complexes of disazo and azo or azomethine dyes |
| 03/17/1987 | US4650859 Wool,polyamides, leather |
| 01/20/1987 | US4638080 Preparation of diphenylazomethines |
| 11/25/1986 | US4625017 Leather, colorfastness |
| 10/14/1986 | US4617382 Printing; dyeing; silk, leather, wool and polyamides |
| 10/08/1986 | EP0196574A2 4,4'-Diaminodiphenyl compounds, process for their preparation and their use |
| 09/03/1986 | EP0193450A2 Process for the preparation of diphenylazomethines |
| 07/08/1986 | US4599287 Positive charging photorecptor |
| 07/02/1986 | CA1206972A Color-forming carboxamidonaphthalene dye precursor and carboximide dye in photographic material and process |
| 05/06/1986 | US4587339 Nickel complex pigments of bis-azomethines |
| 04/15/1986 | US4582902 3-hydroxy-8-oxoquinazolo[3,2-a]-quinoline phenyl azomethines |
| 04/08/1986 | US4581450 3-hydroxy-8-oxoquinazolo[3,2-a]-quinolines |
| 03/26/1986 | EP0175250A2 Agent and process for the determination of redox systems |
| 03/26/1986 | EP0175204A1 Unsymmetrical 1:2 chromium complex dyestuffs |
| 02/04/1986 | US4568752 Recording material for color photography |
| 01/07/1986 | US4563193 Asymmetric 1:2 chrome complex dyes containing an azo and an azomethine compound |
| 12/24/1985 | US4560744 Azo dye 2:1-chromium complexes |
| 11/27/1985 | EP0162811A1 Process for the photochemical stabilisation of materials containing polyamide fibres |
| 10/02/1985 | EP0156768A2 Process for the preparation of 1:2 chromium complex dyes |
| 08/20/1985 | US4536598 Color-forming carboxamidonaphthalene dye precursor and carboximide dye in photographic material and process |
| 08/14/1985 | EP0151369A2 Asymmetrical 1:2 chrome complexes containing an azo compound and an azomethine compound |
| 08/07/1985 | EP0150676A2 1:2 Chromium complex dyes |
| 07/23/1985 | CA1190930A1 Aryloxy substituted photographic couplers and photographic elements and processes employing same |
| 07/10/1985 | EP0148121A2 Asymmetrical 1:2 chromium complex dyes |
| 07/10/1985 | EP0148120A2 Asymmetrical 1:2 chromium complex dyes |
| 06/19/1985 | EP0144791A2 Photoreceptor |
| 06/11/1985 | US4522915 Color photographic silver halide light-sensitive materials containing novel magenta color-forming couplers |
| 04/09/1985 | CA1185057A1 Process for dyeing leather with mixtures of dyes |
| 04/02/1985 | US4508899 Colorfast red-orange-yellow organic pigment |
| 03/27/1985 | EP0135272A2 Metal complex compounds, their preparation and use |
| 03/26/1985 | US4507124 1:2 Metal complexes of azomethine dyes having arylazo groups |
| 03/05/1985 | US4502860 Wool, polyamides, leather |
| 02/05/1985 | US4497734 Asymmetrical 1:2 chromium complexes derived from azo and azomethine dyes |
| 01/15/1985 | US4493888 Using aromatic metal complex as color development agent |
| 01/01/1985 | US4491532 Liquid-crystal mixture with a pleochroic anthraquinone dye, and method for producing such a dye |
| 12/27/1984 | CA1180030A Process for the production of 2,6-dichloro-5-hydroxy- aniline |
| 12/18/1984 | US4489002 Azo compound and an azomethine compound and having a tertiary N-dative bond |
| 12/04/1984 | US4486196 Metallized azo and azo-methine dyes |
| 11/06/1984 | US4481278 Chrome complexed dye developer compounds and photographic products and processes |
| 09/18/1984 | US4472581 Imidazomethylene dyes |
| 07/03/1984 | US4457859 Mesomorphic material containing 2,2'-azoimidazole compounds containing 1,1'-benzylideneamino substituents |
| 06/27/1984 | EP0112281A1 Assymmetrical 1:2 chromium complex dyestuffs containing one azo and one azomethine compound |
| 06/26/1984 | CA1169855A1 Chrome-complex dyes and the production and use thereof |
| 06/13/1984 | EP0110825A1 Asymmetrical 1:2 chromium complex dyestuffs containing one azo and one azomethine compound |
| 06/12/1984 | US4453942 Use of 1:2 cobalt complex dyes for dyeing leather or furs |
| 06/05/1984 | US4452602 Chromium or cobalt complex azo or azomethine dyes |
| 06/05/1984 | CA1168654A1 Chrome-complex dyes and the production and use thereof |
| 04/17/1984 | US4443370 Chrome-complex dyes |
| 03/27/1984 | US4439562 Polymeric material mass-dyed with certain metalized bis-azomethine dyestuffs |
| 03/13/1984 | US4436659 Dyeing polyamids, azo dyes |
| 02/08/1984 | EP0100297A1 Bis-1:2-chromium complexes of disazo dyestuffs, their preparation and their use |
| 01/25/1984 | EP0098965A1 Method for the preparation of concentrated organic or aqueous-organic solutions of chromium complexes of azo or azomethine dyestuffs |
| 01/18/1984 | EP0098799A2 1:2 Metal complexes of azomethine dyestuffs with arylazo groups |
| 01/03/1984 | US4424153 1:2 Chromium complex dyes containing sulfonic acid groups |
| 12/27/1983 | US4423126 Color-forming carboxamidonaphthalene dye precursor and carboximide dye in photographic material and process |
| 12/13/1983 | CA1158642A1 Blocked photographically useful compounds and photographic compositions, elements and processes employing them |
| 12/07/1983 | EP0095899A2 Color-forming carboxamidonaphthalene dye precursor compounds, photographic materials containing them and corresponding carboximide dyes |
| 11/01/1983 | CA1156250A1 Cyan dye-forming couplers |
| 09/13/1983 | US4404136 Chrome complexed azo or azomethine hexadentate dyes |
| 08/30/1983 | US4401752 Aryloxy substituted photographic couplers and photographic elements and processes employing same |
| 07/26/1983 | US4395544 Dyes or chemical intermediates for dyestuffs |
| 07/19/1983 | US4394521 Process for the production of the Schiff's bases of 2,6-dichloro-5-hydroxy-aniline |
| 06/29/1983 | EP0082819A1 Use of 1:2 cobalt complex dyes for dyeing leather or furs |
| 06/22/1983 | EP0082117A1 Chromium complexes of polyazo dyestuffs |