| Patents for C09B 56 - Azo dyes containing other chromophoric systems (771) |
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| 04/05/1995 | EP0495110B1 Novel bisazo compound and electrophotographic photoreceptor having photoreceiving layer containing said bisazo compound |
| 03/07/1995 | US5395926 Bisazo, bisazomethine and azo-azomethine compounds derived from 1,4-phenylenediamine sulfonic acid salts |
| 02/21/1995 | US5391720 Imidazole dyes formed by reaction of imidazoles with diazonium salts |
| 01/03/1995 | US5378568 Electrography, high speed copiers, pyrrazole ring |
| 08/31/1994 | EP0613055A1 Electrophotographic photoreceptor |
| 08/09/1994 | US5336576 Electrophotographic photosensitive member having a photosensitive layer comprising the azo compound |
| 05/10/1994 | US5310906 Direct dyeing of cotton, paper, leather, polyamides, blue |
| 04/12/1994 | US5302704 For dyeing polyamide fibers; colorfastness |
| 04/06/1994 | EP0591105A2 Bisazo, bisazomethine and azo-azomethine compounds |
| 03/22/1994 | US5296325 Dicyanoimidazole compounds usable as colorants for magenta toners, colored resins, colored molded resin memers and color filters |
| 03/08/1994 | US5292608 Bisazo photoconductor for electrophotography |
| 03/08/1994 | US5292602 Bisazo photoconductor for electrophotography |
| 03/03/1994 | WO1994004539A1 Chromogenic reagents |
| 03/03/1994 | CA2142117A1 Chromogenic reagents |
| 03/02/1994 | EP0584962A1 Water-soluble azo compounds and polarizing films using the compounds |
| 02/24/1994 | DE4227522A1 New dichroitic dyestuff cpds. and light-polarising film contg. these or known analogues - which are yellow or yellow-red and have excellent dichroitic property. |
| 02/23/1994 | EP0583607A1 Asymmetrie 1:2-chromium complex dyestuffs |
| 02/15/1994 | US5286590 Electroconductive substrate, and photosensitive layer containing bisazo compound as charge generating substance |
| 01/25/1994 | US5281503 Couplers for photogenerating azo pigments |
| 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 |
| 12/21/1993 | US5272259 Stilbene dyestuffs and light-polarizing films or sheets containing stilbene |
| 11/30/1993 | US5266430 Bisazo gharge generating agent |
| 11/03/1993 | EP0567849A1 Process for preparing dyes |
| 11/03/1993 | EP0567846A1 Cationic triazatrimethine dyes |
| 08/03/1993 | US5233028 Dicyanoimidazole compound derivative, and magenta toner, for colored resin, colored molded resin member and a color filter incorporating it |
| 06/30/1993 | EP0549530A1 Process for dyeing or printing hydroxyl group containing fiber materials |
| 06/15/1993 | US5219689 Electrophotographic photoreceptor comprising azo compound |
| 06/09/1993 | EP0545619A1 An azo compound and electrophotographic photosensitive member having a photosensitive layer comprising the azo compound |
| 06/09/1993 | EP0545420A2 Imidazole azo dyes and thermal transfer dye donating materials containing them |
| 04/13/1993 | US5202436 Dioxazine direct dyes |
| 03/30/1993 | US5198318 Bisazo photoconductor for electrophotography |
| 03/16/1993 | US5194353 Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile employing the same |
| 02/17/1993 | EP0527704A2 Dyestuffs, process for their preparation and the use thereof |
| 12/01/1992 | US5168026 Bis-azo compound and electrophotographic photosensitive member with a light receiving layer containing said bis-azo compound |
| 10/27/1992 | US5158847 Electrophotographic photosensitive member comprising an azo pigment as a charge generating material |
| 10/06/1992 | US5153140 Computerized recording, storage and comparison of absorption spectra of reaction products and intermediates for sondensation and metallization reactions |
| 07/22/1992 | EP0495110A1 Novel bisazo compound and electrophotographic photoreceptor having photoreceiving layer containing said bisazo compound |
| 07/21/1992 | US5132189 Photoconductor for electrophotography |
| 06/16/1992 | US5122605 Colorfastness, wet fastness |
| 05/27/1992 | EP0487050A1 Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile machine employing the same |
| 04/09/1992 | DE4133294A1 Printing plates for electrophotographic printing plates - have light sensitive layer contg. photoconducting 3,4,9,10-perylene:tetra:carboxyl:di:anhydride in particulate form |
| 04/08/1992 | EP0479727A1 Process for producing bisisoindolinone pigments |
| 03/17/1992 | US5097022 Bisazo pigments for use in electrophotographic photoconductors |
| 03/17/1992 | US5096794 Bisazo photoconductor for electrophotography |
| 02/11/1992 | US5087541 Bisazo photoconductor for electrophotography |
| 02/05/1992 | EP0469528A1 Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile employing the same |
| 12/31/1991 | US5077335 Optically clear silicone compositions |
| 12/31/1991 | US5077161 Imaging members with bichromophoric bisazo perylene photoconductive materials |
| 12/26/1991 | WO1991019768A1 Novel bisazo compound and electrophotographic photoreceptor having photoreceiving layer containing said bisazo compound |
| 11/19/1991 | US5066796 Dispersibility, optical absorption, stability, sensitive to light in light emitting diode and diode laser regions |
| 10/31/1991 | DE4012954A1 New amino triazinyl-amino tri:pheno-dioxazine dyestuff cpds. |
| 10/30/1991 | EP0453884A1 Triphendioxazine dyes |
| 10/22/1991 | US5059682 Direct dyes; green; cellulosic fibers; leathers; ink jet printing, heat resistance |
| 10/02/1991 | EP0448815A1 Triphenyl dioxazine dyes |
| 08/20/1991 | US5041539 Preparation of aqueous concentrates of yellow azo and azoxystilbene dyes utilizing alkanolamine salts |
| 08/20/1991 | US5041349 Durability, sensitivity |
| 08/14/1991 | EP0441255A2 Dicyanoimidazole compound derivative, magenta toner, colored resin, colored molded resin member and color filter incorporating it |
| 04/16/1991 | US5007942 Uniform polarizing performance of the filter over the entire spectral range |
| 03/12/1991 | US4999269 Electroconductive Support with a Photosensitive Layer Containing an Azo Pigment |
| 03/05/1991 | US4997917 Textile dyes |
| 02/19/1991 | US4994338 Electrophotographic photosensitive layer containing azo pigment with coupler residue having phenolic hydroxyl group |
| 02/12/1991 | US4992532 Water-soluble phthalocyanine compounds, preparation and use thereof |
| 01/29/1991 | US4988593 Azo compound containing electrophotographic photosensitive member |
| 01/15/1991 | US4985324 Electrophotographic photoreceptor |
| 01/08/1991 | US4983480 Charge generating compounds |
| 12/20/1990 | DE4018010A1 Photoconductor for electrophotography |
| 11/28/1990 | EP0399458A1 Diarylide/disazo pyrazolone pigment compositions |
| 10/31/1990 | EP0395587A2 Method for controlling and optimizing industrial processes for manufacturing dyes |
| 09/04/1990 | US4954133 Mixtures of a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having two 4,4'-(2,2'-disulfostilbenylene) radicals and a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having one such radical |
| 08/30/1990 | DE4005551A1 New sulphonated amino tri:azinyl-amino tri:pheno:di:oxazine cpds. - are used for dyeing substrate esp. textile contg. hydroxyl or nitrogen |
| 07/31/1990 | US4945021 Electrography; dispersibility, pot life; photosensitivity durability |
| 07/10/1990 | US4940783 Disazo containing diaminostilbene as diazo component and an aniline coupling component bearing a cationic alkyl ammonium group |
| 07/04/1990 | EP0376745A2 Optical recording medium and process for the production thereof |
| 07/04/1990 | EP0376032A2 Stilbene dyes and films or sheets containing the same |
| 06/27/1990 | EP0374659A2 Optically clear siloxane compositions |
| 06/27/1990 | EP0374655A1 Light-polarising films or foils containing stilbene pigments |
| 06/23/1990 | CA2006427A1 Light-polarizing films or sheets containing stilbene dyestuffs |
| 06/19/1990 | US4935323 Photoconductor for electrophotography |
| 04/03/1990 | US4914190 Tricyanovinyl-N,N-disubstituted anilines as disperse dyes |
| 04/03/1990 | US4913997 Disazo electrophotographic photoreceptor |
| 03/28/1990 | EP0202341B1 Dichroic azo dyes |
| 03/13/1990 | US4908437 Thien-2-one compounds with an alkylidene or imino group in the 5-position of the ring |
| 01/24/1990 | EP0352229A2 Process for dyeing paper |
| 11/28/1989 | US4883866 Methine-azo compounds containing cyclic cationic ammonium groups |
| 11/15/1989 | EP0342159A1 Water soluble phthalocyanine compounds, process for their preparation and their use |
| 11/15/1989 | EP0342158A1 Water soluble phthalocyanine compounds, process for their preparation and their use |
| 10/17/1989 | US4874848 Asymmetrical polyazo chromium complex dyes comprising resorcinol as a coupling component |
| 10/10/1989 | US4873164 Electrophotographic photoreceptor comprising a charge transport medium and a bis-azo compound containing oxygen |
| 10/03/1989 | US4871633 Photoelectrical charge generating compound |
| 09/26/1989 | CA1261822A1 Methine-azo compounds |
| 07/11/1989 | US4847364 Cationic dyes for paper |
| 03/28/1989 | CA1251786A1 Process for the preparation of concentrated storage- stable aqueous solutions of yellow azo- and azoxystilbene dyes |
| 03/08/1989 | EP0306452A2 Cationic disazo stilbene dyes |
| 02/28/1989 | US4808507 Electrophotographic photoreceptor 2-Phenyl-benzooxazole bisazo based |
| 01/19/1989 | DE3823126A1 Electrophotographic photoreceptor |
| 12/07/1988 | EP0293745A2 Process for the production of discharge prints |
| 11/23/1988 | EP0291853A2 Thienon compounds |