| Patents for C09B 55 - Azomethine dyes (1,049) |
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| 10/15/1980 | EP0017114A2 Process for the preparation of concentrated solutions of 1:2 complex metal dyestuffs and their use in dyeing and printing natural and synthetic polyamides |
| 10/14/1980 | US4228233 Cyan dye forming, colorless coupler |
| 10/07/1980 | US4226934 Silver halide emulsions, hetero-heterothioacetophenones |
| 10/01/1980 | EP0016732A1 Process for producing photographic images, and suitable photographic material |
| 08/26/1980 | US4219473 Substituted unsymmetrical azo, azomethine 1:2 chromium complexes |
| 08/12/1980 | CA1083590A1 Water-insoluble disazo methine compounds process for their preparation and their use as dyestuffs |
| 07/29/1980 | US4215042 Copper, and nickel complexes of azo dyestuffs |
| 07/15/1980 | US4212801 Unsymmetrical 1:2-chromium complexes containing an azo and an azomethine bond |
| 07/15/1980 | CA1081702A1 Photographic material containing oxazolinone-2 couplers, oxazolinone-2 compounds and process for their preparation |
| 07/01/1980 | US4210757 Novel naphthoylene-perinones disperse dyestuffs |
| 07/01/1980 | CA1080731A1 Production of azomethine pigment |
| 07/01/1980 | CA1080730A1 Material for colour photography |
| 06/25/1980 | EP0012241A1 Use of disazomethine compounds for the dyeing of thermoplastic polyesters in the mass |
| 06/24/1980 | CA1080231A1 Heterocyclic symmetrical azomethine complex pigments |
| 06/10/1980 | US4207111 Light-sensitive silver halide color photographic materials |
| 06/03/1980 | US4206278 Silver halide, heterocyclic yellow coupler |
| 06/03/1980 | CA1078829A1 Photographic compounds and elements and processes using them |
| 05/27/1980 | US4204879 Amino acid salts of anionic dyestuffs which have high solubility in organic solvents |
| 05/20/1980 | US4203768 Yellow heterocyclic coupler with a sulfonamide group |
| 05/06/1980 | US4201584 Silver halide elements containing yellow forming color couplers for silver halide photography |
| 04/22/1980 | CA1076105A1 Water-soluble 1:2-cobalt complex dyestuffs, process for preparing same and their use for dyeing natural and synthetic polyamide fibers |
| 04/16/1980 | EP0009989A2 Photographic recording material containing blocked photographically useful compound |
| 04/15/1980 | US4198345 Process for the production of bis-azomethine pigments |
| 04/02/1980 | EP0009466A1 1 : 2-Bis-chromium-complex dyestuffs from polyazo- or disazo-azomethine compounds, their preparation and their use |
| 04/01/1980 | CA1074786A1 Metal complexes of bishydrazides |
| 03/05/1980 | EP0008323A1 Process for the preparation of pyridine aldehydes and their derivatives, and compounds made by this process |
| 02/26/1980 | US4190723 Nickel, copper, zinc, cobalt complexes, pigments |
| 02/20/1980 | EP0008063A1 Azomethine derivatives of anthraquinones, methods for their preparation, their use in the pigmentation of organic macromolecular compounds and the materials thus obtained |
| 01/29/1980 | US4186019 Color photographic material containing novel 2-equivalent yellow couplers |
| 01/22/1980 | CA1070296A1 Chromium complexes, their manufacture and use |
| 01/09/1980 | EP0006243A1 Colour photographic recording material, colour photographic process for producing a yellow image, yellow coupler and process for production of yellow couplers |
| 01/08/1980 | US4182630 Pivalyl-acetanilide couplers and photographic elements including them |
| 01/08/1980 | CA1069369A1 Color photographic silver halide materials with new 2-equivalent yellow couplers |
| 12/25/1979 | US4180656 Azomethine compounds |
| 12/25/1979 | CA1068684A Azomethine dyes for polypropylene |
| 12/25/1979 | CA1068682A Bisazomethine dyes for polypropylene |
| 12/18/1979 | CA1068053A1 Azomethine compound pigment |
| 11/27/1979 | CA1067086A1 Process for the production of 2-equivalent yellow couplers |
| 11/13/1979 | US4174221 Yellow 2:1 chrome complexed dye developers |
| 10/23/1979 | CA1064950A1 Bis-azomethine metal complex colorants of hydroxycoumarin derivatives or hydroxychromone derivatives and process for their manufacture |
| 10/02/1979 | CA1063348A1 Heat-sensitive recording material |
| 09/04/1979 | US4166741 Yellow azomethine dye developers |
| 08/21/1979 | CA1060897A1 Color photographic material containing new 2-equivalent yellow couplers |
| 08/07/1979 | CA1059997A1 Chromium complex dyes, their manufacture and use |
| 07/25/1979 | EP0003121A1 Utilisation of water-insoluble disazomethine compounds for the mass colouring of thermoplastic polyesters, espezially for spin dyeing |
| 07/10/1979 | CA1058191A1 Color photographic material containing new 2-equivalent yellow couplers |
| 06/12/1979 | US4157919 Silver halide emulsions containing yellow-dye-forming couplers |
| 06/05/1979 | US4157265 Water-insoluble disazomethine mixed metal-complex compounds, process for preparing them and their use as colorants |
| 05/30/1979 | EP0002041A1 Processes for synthesizing bisazomethine-bisazo pigments |
| 05/22/1979 | CA1055019A1 Metallised dyes, their manufacture and use |
| 05/15/1979 | US4154746 For use in electro-optical display devices |
| 05/08/1979 | US4153601 4-Hydroxyquinolone-(2)-azomethine copper complex pigments |
| 05/02/1979 | EP0001650A1 Acylacetanilide compounds and their use as yellow forming colour couplers for silver halide photography |
| 05/01/1979 | CA1053831A1 Styrene-divinyl benzene copolymers terminated with organic dyes as pigments for thermoplastic polymers |
| 04/24/1979 | CA1053250A1 Water-insoluble azamethine compounds, process for their preparation and their use as dyeing agents |
| 04/17/1979 | US4150046 Organic pigments |
| 04/17/1979 | US4149886 Development inhibitor releasing photographic coupler containing triazole moiety |
| 04/17/1979 | CA1052803A1 Water-insoluble disazo methine compounds, process for their preparation and their use |
| 04/17/1979 | CA1052782A1 Process for the manufacture of bis-azomethine metal complex colorants |
| 04/10/1979 | US4148656 Spirochroman couplers |
| 03/27/1979 | US4146400 Silver halide emulsions, heterocyclic nitrogen compound |
| 03/27/1979 | US4146396 Method of forming color photographic images |
| 03/27/1979 | CA1051421A1 Nematic liquid crystal compounds and compositions |
| 03/20/1979 | US4145339 Water-soluble 1:2-cobalt complex dyestuffs of an azomethine and of an azo compound |
| 03/20/1979 | CA1050992A1 Azomethine pigments |
| 03/06/1979 | US4143058 Process for production of an azomethine pigment |
| 02/07/1979 | EP0000505A1 Metal complexes, process for their preparation and their application as pigments |
| 01/30/1979 | US4137193 Utilization of dyes for liquid crystal displays |
| 01/23/1979 | US4135929 Photographic sulfonamido compounds and elements and processes using them |
| 01/09/1979 | US4133958 Splittable 1,3-diazolone-2-ring |
| 01/09/1979 | US4133955 Process for the production of 2-equivalent yellow couplers |
| 12/26/1978 | US4131733 Water-insoluble azomethine compounds |
| 12/12/1978 | US4129739 Amidine compounds |
| 12/05/1978 | CA1043618A1 Photographic material containing yellow couplers |
| 11/21/1978 | CA1042876A1 Metal complexes of bis-azomethines and processes for their manufacture |
| 11/14/1978 | CA1042453A1 Disperse bisanil dyes derived from diaminomaleonitrile and their preparation |
| 11/14/1978 | CA1042452A1 Disperse bisanil dyes derived from diaminomaleonitrile and their preparation |
| 10/31/1978 | US4123429 1:1 Chromiferous complex azo compounds having a bidentate chelating group and a monofunctional neutral ligand |
| 10/31/1978 | US4123223 Metal-modified polypropylene dyed with azomethine dyes derived from an 0-hydroxy aromatic aldehyde and a 2-aminopyridine |
| 10/24/1978 | US4122261 Water-insoluble pigments |
| 10/24/1978 | US4122117 Indandione bis-azomethine pigments |
| 10/24/1978 | CA1041116A1 Color developer compositions containing improved yellow dye-forming coupler |
| 09/26/1978 | US4116952 Polyamides |
| 09/12/1978 | US4113954 Multistage; reacting an alkyl b-alkoxy-b-iminopropionate salt with an aniline |
| 09/12/1978 | US4113759 Metal-containing disazomethine compounds, process for preparing them and their use as colorants |
| 09/05/1978 | CA1037962A1 Azamethine metal complex compounds |
| 08/29/1978 | US4110375 Intermediates |
| 08/29/1978 | CA1037480A1 Aromatic aldehydes and process for preparing them |
| 08/15/1978 | CA1036614A1 Disperse bisanil dyes derived from diaminomaleonitrile and their preparation |
| 07/25/1978 | US4102879 Unsymmetrical azomethine 1:2-chromium complex dyes |
| 06/27/1978 | US4097510 Pigments for dyeing, colorfastness, heat stable, good transparency |
| 06/20/1978 | US4096157 Pigments |
| 06/20/1978 | US4095984 Benzothiazolinylidene(amino) benzotriazoles |
| 06/20/1978 | US4095983 Photographic material comprising cyclic sulfonamide substituted yellow color couplers |
| 04/25/1978 | US4086094 Hydrophilic colloid layer |
| 04/18/1978 | US4085062 N,N'-bis-aromaticformamidines useful as sunscreening agents |
| 03/14/1978 | US4078936 Silver halide emulsion containing two-equivalent yellow coupler |
| 02/28/1978 | US4076533 Silver halide emulsion containing two-equivalent coupler |
| 02/14/1978 | US4074053 Intermediates for optical brighteners and pharmaceuticals |
| 02/07/1978 | US4072700 Pigments |