| Patents for C09B 26 - Hydrazone dyes; Triazene dyes (487) |
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| 08/27/1996 | US5550252 Imidazoline dyes for dye donor elements in thermal printing |
| 07/30/1996 | US5541299 Reaction of diazo compound with coupler and nitrate |
| 07/03/1996 | EP0406333B2 A heat sensitive recording element and a thermographic method |
| 05/21/1996 | US5518891 Substituted anilines, hydrazones or 4-aminoantipyrines |
| 03/26/1996 | US5502171 Reacting heterocyclic diazo compound with heterocyclic coupler |
| 03/20/1996 | EP0701906A1 Dyes and dye-donor elements for thermal dye transfer recording |
| 02/21/1996 | CN1117265A Cationic dyes for keratin-containing fibres |
| 02/06/1996 | US5489568 Triazene dyes for use in thermal transfer printing |
| 12/19/1995 | US5476935 Dyes for use in thermal dye transfer |
| 11/21/1995 | US5468870 Dyes and dye-donor elements for use in thermal dye sublimation transfer |
| 11/21/1995 | US5468258 High density image |
| 11/15/1995 | EP0681464A1 Cationic dyes for keratin-containing fibres |
| 08/01/1995 | US5438122 Triazene dyes for use in thermal transfer printing |
| 06/13/1995 | US5424475 Thermal imaging dye precursors |
| 06/08/1995 | WO1995015144A1 Cationic dyes for keratin-containing fibres |
| 12/07/1994 | EP0627325A2 Triazene dyes for use in thermal transfer printing |
| 12/06/1994 | US5371228 Dyes and dye-donor elements for use in thermal dye sublimation transfer |
| 12/06/1994 | CA1333398C Heat sensitive recording element and a thermographic method |
| 10/18/1994 | US5356857 Triazene dyes for use in thermal transfer printing |
| 08/24/1994 | EP0611663A1 Heterocyclic hydrazonedyes and dye-donor elements containing the same for use in thermal dye transfer |
| 07/12/1994 | US5328993 Dyeing plastics; colorfastness, photostability |
| 06/28/1994 | US5324601 Dyes and dye-donor elements for use in thermal dye transfer |
| 06/22/1994 | EP0602714A1 Dyes and dye-donor elements for use in thermal dye transfer |
| 05/17/1994 | CA1329504C Electrophotographic photoreceptor |
| 04/12/1994 | US5302704 For dyeing polyamide fibers; colorfastness |
| 03/01/1994 | US5290649 Ozone resistant photoreceptors with improved durability |
| 11/03/1993 | EP0567849A1 Process for preparing dyes |
| 11/03/1993 | EP0567846A1 Cationic triazatrimethine dyes |
| 11/02/1993 | US5258251 Multilayer light sensitive element on a conductive substrate with charge transfer material |
| 10/28/1993 | DE4242428A1 Triazene and tri:aza-tri:methine dyestuff cpds. prodn. - by simultaneous diazotisation of diazo component and coupling with aryl or hetaryl amine in aq. medium under carbon di:oxide pressure |
| 10/26/1993 | US5256508 Electric charge transferring material on the conductive substrate; charging, reuse, potentials |
| 10/12/1993 | US5252416 Photoconductor for electrophotography |
| 06/29/1993 | US5223362 Multilayer; electroconductive substrate, charge transfer and charge generating compound |
| 05/25/1993 | US5213925 Charge transport substance containing bis(hydrazone-thiophene) compound |
| 04/14/1993 | EP0406333B1 A heat sensitive recording element and a thermographic method |
| 03/16/1993 | US5194626 Metal complex pigments of azines |
| 02/17/1993 | EP0527704A2 Dyestuffs, process for their preparation and the use thereof |
| 09/30/1992 | EP0506486A1 Hydrazone compound and photosensitive material using said compound |
| 09/30/1992 | EP0506441A1 Hydrazone compound and photosensitive material using said compound |
| 09/15/1992 | US5147845 Printing |
| 08/25/1992 | US5142089 Dyes and dye-donor elements for use in thermal dye sublimation transfer |
| 07/07/1992 | US5128227 Electrophotographic recording material having a julolidine hydrazone compound |
| 07/01/1992 | EP0493124A1 Process for the manufacture of 2-phenyl-4,5-oxazoledione 4-phenylhydrazones |
| 03/24/1992 | US5098810 Electrophotographic photoreceptors |
| 03/17/1992 | US5097027 Organic pigments for polymers |
| 01/07/1992 | US5079365 Triazolopyridine dyes and thermal transfer of methine dyes |
| 11/19/1991 | US5066695 High-molecular weight organic material containing a metal complex pigment basaed on hydrazone |
| 10/31/1991 | DE4109751A1 Naphthoquinone-thiazol(-2-)one azine derivs. prodn. - by coupling hydrazone and naphthol in presence of hydrogen peroxide and peroxidase, useful as basis for clinical assays |
| 10/08/1991 | US5055580 Substituted polycylic derivatives of the 9-oxo-1,9a,10-triaza-9-hydroanthracene and method for coloring of native or synthetic materials |
| 10/02/1991 | EP0448843A1 Electrophotographic recording material |
| 07/23/1991 | US5034277 Film comprising at least one unimolecular layer |
| 06/25/1991 | US5026677 Dyes and dye-donor elements for use in thermal dye sublimation transfer |
| 05/22/1991 | EP0427993A2 Heterocyclic compounds and their use as pigments and dyes |
| 03/19/1991 | US5001229 Water soluble basic dyestuffs |
| 03/13/1991 | EP0416434A2 Triazole pyridine dyes and a thermal transfer process of methine dyes |
| 02/20/1991 | EP0413020A1 Pyrazolotriazoles and processes for their formation |
| 02/05/1991 | US4990625 Process for synthesis of N,N-disubstituted hydrazone |
| 01/30/1991 | EP0410285A1 Laminated organic photosensitive material |
| 01/29/1991 | US4988596 Photosensitive member containing hydrazone compound with styryl structure |
| 01/20/1991 | CA2021350A1 Laminated organic photosensitive material |
| 01/15/1991 | US4985325 Photoconductor for electrophotography containing hydrazone |
| 01/09/1991 | EP0406333A1 A heat sensitive recording element and a thermographic method. |
| 12/05/1990 | EP0400706A1 Dyes and dye-donor elements for use in thermal dye sublimation transfer |
| 11/30/1990 | CA2016687A1 Dyes and dye-donor elements for use in thermal dye sublimation transfer |
| 11/13/1990 | US4970120 Hydazone and nitro-substituted phenyl compound, and unsaturated amide |
| 09/11/1990 | US4956277 Photoconductor comprising charge transporting hydrazone compounds |
| 08/23/1990 | WO1990010004A1 Pyrazolotriazoles and processes for their formation |
| 08/23/1990 | CA2026440A1 Pyrazolotriazoles and processes for their formation |
| 05/15/1990 | US4925926 Preparation of cationic azo or hydrazone dyes in which the alkylation and the separation of the cationic dye are carried out continuously |
| 04/03/1990 | US4914209 Photographic couplers |
| 02/08/1990 | WO1990000978A1 A heat sensitive recording element and a thermographic method |
| 01/10/1990 | EP0349809A2 Complex metal pigments |
| 01/03/1990 | EP0349489A2 Organic macromolecular material containing a hydrazone-based metal complex pigment |
| 12/13/1989 | EP0345839A1 Magenta dye-releasing compounds |
| 11/02/1989 | EP0339556A2 9-Oxo-1,9a-10-triaza-9-hydroanthracene compounds, their preparation process and their use as dyestuffs |
| 07/11/1989 | US4847378 Chromogenic polycyclic azamethines |
| 06/28/1989 | EP0321778A2 Basic dyes |
| 06/14/1989 | EP0319992A2 Electrophotographic light-sensitive material |
| 05/16/1989 | US4830944 Function separated photosensitive member having a diphenylamine derivative disazo charge generation material |
| 02/01/1989 | EP0301411A1 Film composed of at least one monomolecular layer |
| 11/22/1988 | US4786571 Photosensitive member with hydrazone charge transport material |
| 11/17/1988 | EP0291456A2 Polycyclic chromogene azamethine compounds, their preparation and their use |
| 11/15/1988 | US4784929 Latent images |
| 09/20/1988 | CA1242210A1 Use of metal complexes of hydrazones as pigments |
| 07/26/1988 | US4760132 Process for preparing cationic hydrazone dyestuffs |
| 06/22/1988 | EP0272212A2 Process for continually producing azo or hydrazone dyes |
| 01/26/1988 | US4721745 Pigments based on metal complexes |
| 09/15/1987 | CA1226986A1 Photopolymerisable coating agent, and a photopolymerisable material and its use |
| 09/08/1987 | US4692529 Method for synthesizing a magenta coupler by selectively etherifying 4-hydroxy-5-pyrazolone |
| 08/19/1987 | EP0232854A2 Electrophotographic photoreceptor |
| 07/29/1987 | EP0229980A2 Process for the manufacture of cationic hydrazone dyes |
| 07/01/1987 | EP0226751A1 Photosensitive member for electrophotography |
| 06/10/1987 | EP0224687A1 Metal complex pigments |
| 02/10/1987 | US4642280 Electrophotographic photoreceptors containing hydrazone compounds as charge-transfer agents |
| 10/28/1986 | US4619880 Electrophotographic light sensitive material contains hydrazone compound |
| 09/16/1986 | US4612014 Use of metal complexes of hydrazones as pigments |
| 07/15/1986 | US4600688 Silver halide color photographic light-sensitive material |
| 06/10/1986 | US4594304 Electroconductive support; charge generating and charge transfer material |
| 10/22/1985 | US4548888 Photographic products employing novel nondiffusible hydrazone dye-releasing compounds |
| 08/21/1985 | EP0152296A2 Silver halide color photographic light-sensitive material |