| Patents for C09B 35 - Disazo or polyazo dyes of the type a d b prepared by diazotising and coupling (1,497) |
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| 02/06/1996 | US5489672 Process for the production of dis-azo pigment whose amine content is small, and pigment produced by said process |
| 02/06/1996 | US5489671 Acid and triazole dyes; good solubility, colorfastness, waterproofing |
| 01/30/1996 | US5488101 Dyes with naphthol groups for images and fibers |
| 01/23/1996 | US5486601 Trisazo dye, and aqueous ink composition containing the same |
| 01/17/1996 | EP0692523A1 Azo dyestuffs, their preparation and use |
| 11/29/1995 | EP0684288A1 Process for the preparation of aminoazo dyes |
| 11/23/1995 | WO1995031506A1 Dyes for leather |
| 11/23/1995 | CA2189138A1 Dyes for leather |
| 11/21/1995 | US5468848 Basic azo dyestuffs of the 3-cyano-2,4,6-triamino pyridine series |
| 11/07/1995 | US5464941 Biphenyl pyrazine compounds |
| 11/07/1995 | US5464923 Polymer compositions containing substituted biphenyl pyrazines |
| 10/18/1995 | EP0677557A1 Dyes and the use thereof in inks for ink jet printing process |
| 10/17/1995 | US5459247 Bisazo compounds useful as charge generating materials |
| 08/31/1995 | WO1995023189A1 Bisazo compound |
| 08/15/1995 | US5441844 Optical information recording medium using bisazo or trisazo compounds |
| 07/11/1995 | US5431723 Use of liquid preparations of a disazo dye in the ink jet process and the diazo dye |
| 07/04/1995 | US5430130 Photosensitive polyfunctional aromatic diazo compounds useful in photosensitive compositions |
| 06/14/1995 | EP0657506A1 Azo dyes, their preparation and use |
| 06/13/1995 | US5424403 Preparation of aminoazo dyes |
| 06/13/1995 | US5423906 Black dyes which yield water resistant images on paper when used for thermal printing |
| 06/06/1995 | US5421872 Disazo dyes in the form of free acid |
| 05/10/1995 | EP0652261A1 Dichroic azo dye, liquid crystal composition containing the same, and liquid crystal element using the composition |
| 05/09/1995 | US5414131 From disazo or disazoxy dye |
| 05/09/1995 | US5413630 Colorant and ink compositions |
| 05/03/1995 | EP0651027A1 Disazo dyestuffs of the stilbene series |
| 05/03/1995 | EP0651025A1 Process for the production of dis-azo pigment whose amine content is small, and pigment produced by said process |
| 05/02/1995 | US5411828 Azo dye |
| 05/02/1995 | US5411556 Manufacturing colorfast dyed leather |
| 05/01/1995 | CA2134487A1 Disazo dyestuffs of the stilbene series |
| 04/05/1995 | EP0495110B1 Novel bisazo compound and electrophotographic photoreceptor having photoreceiving layer containing said bisazo compound |
| 03/29/1995 | EP0645436A1 Tetrakisazo compound and ink containing the compound |
| 03/29/1995 | EP0645435A1 Trisazo dye, process for producing the same and aqueous ink composition containing the same |
| 03/29/1995 | EP0645434A1 Trisazo compound, method for dyeing by using it and ink containing it |
| 03/07/1995 | US5395926 Bisazo, bisazomethine and azo-azomethine compounds derived from 1,4-phenylenediamine sulfonic acid salts |
| 02/15/1995 | EP0638620A2 Dyes for use in printing inks |
| 02/14/1995 | US5389285 Liquid crystal coupled dichroic dyes |
| 02/14/1995 | US5389110 Intense, colorfast, water soluble yellow dyes |
| 01/18/1995 | EP0634457A1 Azo color for color filter and process for producing color filter |
| 01/10/1995 | US5380859 Pyridone compounds and the preparation of disulfonated pyridone compounds |
| 01/04/1995 | EP0632104A1 Basic azodyes |
| 01/03/1995 | US5378568 Electrography, high speed copiers, pyrrazole ring |
| 12/14/1994 | EP0628881A2 An organic photoconductive material and photosensitive material for electronic photography using it |
| 12/08/1994 | WO1994028073A1 Thermostable and lightfast dichroic light polarizers |
| 12/07/1994 | EP0627470A1 Trisazo compounds, ink containing them and method for dyeing |
| 12/06/1994 | US5370954 Photoconductive composition containing trisazo and disazo compounds |
| 11/02/1994 | CN1094423A Weak acid red dyestuff |
| 10/26/1994 | EP0621317A1 Azo compound and polarizing film using it |
| 10/26/1994 | EP0572450B1 Azo dyes having a diazo component from the aminobenzophenone series, as well as bisulphonated pyridone compounds |
| 10/26/1994 | CN1094033A Process for preparing Û5-amino-2-(2-hydroxyethylamino)-phenylÙ (2-hydroxyethyl) sulphone |
| 10/04/1994 | US5352334 The use of metal-free sulfo group free basic disazo compounds containing two identical 6-hydroxypyrid-2-one coupling component radicals for producing colored paper |
| 09/14/1994 | EP0614934A1 Colored resin, colored molded resin member and color filter |
| 09/06/1994 | US5344736 Disazo electrophotographic photoreceptor |
| 08/31/1994 | EP0613055A1 Electrophotographic photoreceptor |
| 08/23/1994 | US5340929 Trisazo dye and dye composition containing the same |
| 08/23/1994 | US5340504 Light-polarizing films containing dichroic dyes |
| 08/18/1994 | WO1994018274A1 Azo color for color filter and process for producing color filter |
| 08/09/1994 | US5336763 Trisazo dye and dye composition containing the same |
| 08/09/1994 | US5336576 Electrophotographic photosensitive member having a photosensitive layer comprising the azo compound |
| 07/05/1994 | US5326865 Arylazo and poly(arylazo) dyes having at least one core radical selected from naphthyl or anthracyl and having at least one 2,3-dihydro-1,3-dialkyl perimidine substituent |
| 06/15/1994 | EP0601406A1 Method for the preparation of (5-amino-2-(2-hydroxyethylamino)phenyl)(2-hydroxyethyl) sulphone |
| 06/14/1994 | US5320648 Process for dyeing or printing hydroxyl group containing fibre materials |
| 05/31/1994 | US5317093 Bisazo compounds useful as organic photoconductive materials |
| 05/25/1994 | EP0598244A1 Process for dyeing of leather with a red azo dyestuff |
| 05/25/1994 | EP0518909B1 Water-insoluble azo dyes, their manufacture and use |
| 05/17/1994 | US5312906 Disazo dyes |
| 04/06/1994 | EP0591105A2 Bisazo, bisazomethine and azo-azomethine compounds |
| 04/06/1994 | EP0591103A1 Disazo colorants for colouring paper |
| 03/31/1994 | DE4042427C2 New tetrakis:azo cpds. used as electrophotographic charge generator |
| 03/22/1994 | US5296448 Thermal transfer printing |
| 03/22/1994 | US5296325 Dicyanoimidazole compounds usable as colorants for magenta toners, colored resins, colored molded resin memers and color filters |
| 03/22/1994 | CA1327967C Anionic triazinylamino-disazo dyestuffs |
| 03/15/1994 | CA1327792C Polyazo dyes and intermediates therefor |
| 03/09/1994 | EP0585659A1 Use of liquid dyestuff preparations containing a disazo dyestuff for the ink-jet process and this disazo dyestuff |
| 03/09/1994 | EP0585654A1 Azo dyes with a coupling component of the N-(hydroxysulfonylphenylalkyl)-pyridone series |
| 03/08/1994 | US5292608 Bisazo photoconductor for electrophotography |
| 03/08/1994 | US5292602 Bisazo photoconductor for electrophotography |
| 03/08/1994 | CA1327567C Trisazo dyes and process for dyeing paper |
| 03/03/1994 | WO1994004613A1 Watersoluble disazodyes for dyeing leather |
| 02/24/1994 | DE4227521A1 New dichroitic azo-stibyl-azo-salicylic acid dyestuff cpds. and use in light polarising film contg. these or known analogues - which are yellow or yellow-red and have excellent dichroitic property. |
| 02/22/1994 | US5288576 High sensitivity, durability |
| 02/22/1994 | US5288294 Process for dyeing paper with disazo dyes |
| 02/21/1994 | CA2103783A1 Use of liquid preparations of a disazo dye in the ink jet process and the disazo dye |
| 02/15/1994 | US5286590 Electroconductive substrate, and photosensitive layer containing bisazo compound as charge generating substance |
| 01/26/1994 | EP0580121A2 Photosensitive polyfunctional aromatic diazo compounds and photosensitive compositions using the same |
| 01/25/1994 | US5281503 Couplers for photogenerating azo pigments |
| 01/25/1994 | US5281264 Salt of disazo acid dye containing pyrrazole ring and basic dye, inks |
| 01/12/1994 | EP0578181A2 Electrophotographic photoreceptor |
| 01/11/1994 | US5278013 Disazo pigments |
| 01/05/1994 | EP0577245A1 Photogenerating azo pigments |
| 01/04/1994 | US5275898 Bisazo photoconductor for electrophotography |
| 12/28/1993 | US5274084 Bisazo compounds which contain a diphenoquinone tetraazo component and an electrophotographic photosensitive member having a photosensitive layer comprising the bisazo compound |
| 12/21/1993 | US5272259 Stilbene dyestuffs and light-polarizing films or sheets containing stilbene |
| 12/14/1993 | US5270139 Photoconductor comprising bisazo and squarylium pigments as the charge generation material |
| 12/08/1993 | EP0572450A1 Azo dyes having a diazo component from the aminobenzophenone series, as well as bisulphonated pyridone compounds. |
| 11/30/1993 | US5266430 Bisazo gharge generating agent |
| 11/25/1993 | DE4315031A1 New sulphonated dis:azo dyes |
| 10/19/1993 | US5254420 Magenta toner for developing electrostatic images, colored resin, colored molded resin member and color filter |
| 10/06/1993 | EP0563907A1 Salt-forming type dye and ink composition containing it |
| 09/21/1993 | US5246805 Disazo pigment |
| 09/14/1993 | US5244761 Imaging members with fluorinated trisazo photogenerating materials |