| Patents for C09B 31 - Disazo or polyazo dyes of the type a b c, a b c d, or the like, prepared by diazotising and coupling (1,445) |
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| 08/01/2006 | US7083670 disazo dye with an ionic hydrophilic group, aromatic and thiophene groups; storage stability, oxidation and water resistance, light and colorfast |
| 07/27/2006 | WO2006077189A2 6-azo-5,5'-dihydroxy-7,7'-disulfo-2,2'-dinaphthylamine derivatives |
| 07/27/2006 | US20060164483 Ink for inkjet recording, ink set for inkjet recording and inkjet recording method |
| 07/27/2006 | US20060162616 Ink and ink-jet recording ink |
| 07/19/2006 | CN1803932A Light resistant, bis-azo yellow organic pigment and method for preparing the same |
| 07/12/2006 | EP1679350A1 Dye for anisotropic dye film, dye composition for anisotropic dye film, anisotropic dye film and polarizing device |
| 07/12/2006 | EP1679312A2 Cationic symmetric 2-imidazolium diazo compounds with a cationic linking group,compositions comprising them, a dying process and kit thereof |
| 07/12/2006 | EP1678259A2 Disperse azo dyestuffs |
| 07/06/2006 | WO2006070818A1 Trisazo dye, composition containing the same for anisotropic dye film, anisotropic dye film, and polarizing element |
| 07/04/2006 | US7070715 2-(4-(4-sulfophenyl- or 6,8-disulfo-2-naphthyl- azo)-2(or 5-)-methylphenyl azo)-1-hydroxy-3-sulfo-6-anilinonaphthalene; dye-based polarizing film |
| 06/22/2006 | WO2006064852A1 Azo dye, composition containing the same for anisotropic dye film, anisotropic dye film, and polorizing element |
| 06/21/2006 | EP1672033A2 Symetric diazo compounds containing 2-pyridinium groups and a linker being cationic or not, compositions containing them, process of dyeing and kit |
| 06/21/2006 | EP1671971A1 Symmetric 4-pyridinium diazo compounds with a cationic or non cationic linking group, compositions comprising them , a dying process and kit thereof |
| 06/21/2006 | EP1240645B1 Method for digitally and optically storing data |
| 06/14/2006 | DE4407802B4 Azoverbindungen und Zwischenprodukte, deren Herstellung und Verwendung Azo compounds and intermediates, their preparation and use |
| 06/14/2006 | CN1786078A Preparation technology of direct mixed spinning purple dyestuff |
| 06/07/2006 | EP1666537A1 Colorant for ocular lenses and material for colored ocular lenses using the colorant |
| 06/07/2006 | EP1147151B1 Disazo dyes and inks containing them |
| 06/01/2006 | WO2006057214A1 Azo compounds and dye-type polarizing films or plates containing the same |
| 06/01/2006 | CA2586123A1 Azo compounds and dye-type polarizing films or plates containing the same |
| 05/30/2006 | US7052538 Trisazo dyes for ink jet printing |
| 05/23/2006 | US7048790 Black ink for inkjet recording |
| 05/17/2006 | EP1516021B1 Printing process using specified azo compounds |
| 05/17/2006 | EP1153085B1 Disazo dyes and inks containing them |
| 05/17/2006 | CN1774480A Azo compound and salt thereof |
| 05/10/2006 | EP1147153B1 Disazo dyes and inks containing them |
| 05/10/2006 | CN1771297A Methanesulfomide azo dye |
| 05/09/2006 | US7041161 Trisazo dyes for ink jet printing |
| 04/27/2006 | WO2006042801A1 4,4'-diazobenzanilide dyestuffs |
| 04/18/2006 | US7029523 Black ink for ink-jet recording |
| 04/05/2006 | CN1249172C Method for preparing tetrazo condensation pigment in micro-reactor |
| 03/29/2006 | CN1247705C Pigment of chirality bisazo and application |
| 03/28/2006 | US7019129 at least three radicals selected from substituted or unsubstituted aryl, heteroaryl and combinations, wherein at least two of the residues are covalently linked via an exocyclic diazo bond, and a reactive functional group providing a locus for conjugation of the quencher to a carrier |
| 03/16/2006 | US20060053571 Azo dyes soluble in organic solvents |
| 03/15/2006 | EP1633824A1 Ink and ink-jet recording ink |
| 03/14/2006 | US7011875 Optical information-recording medium and dye |
| 03/09/2006 | WO2006024618A1 Cyanopyridine-based azo dyes |
| 03/08/2006 | EP1228148B1 Disazo dyestuffs for ink jet printing |
| 02/28/2006 | US7005507 Azo dyes, a process for their preparation and their use in the dyeing or printing of hydrophobic fiber materials |
| 02/16/2006 | US20060035262 Dark quenchers for donor-acceptor energy transfer |
| 01/25/2006 | EP1619256A1 Microorganism staining agent and use thereof |
| 01/18/2006 | EP1615973A1 Methanesulfoamide azo dye |
| 01/11/2006 | EP1614719A1 Azo compound and salt thereof |
| 01/11/2006 | CN1720298A Benzimidazole-pyridone-based azo dyes |
| 12/08/2005 | US20050272088 Dark quenchers for donor-acceptor energy transfer |
| 11/23/2005 | EP1495080B1 Coloring composition and inkjet recording method |
| 11/15/2005 | US6964701 Azo dyes containing a barbituric acid moiety, ink-jet printing inks and processes |
| 11/03/2005 | US20050243151 Color composition and inkjet recording method |
| 10/19/2005 | CN1223636C Bisazo solvent dye preparation method and uses |
| 10/12/2005 | CN1681890A Process for preparing azo compound |
| 10/06/2005 | US20050217535 Triazo dye containing pyrrazolone group; dyeing paper, textile, overhead slides |
| 10/04/2005 | CA2241099C Bisazo compounds and process for the preparation thereof |
| 09/28/2005 | CN1675323A Ink for inkjet recording, ink set for inkjet recording and inkjet recording method |
| 09/22/2005 | DE102004010999A1 Kationische Naphthyldiazofarbstoffe sowie diese Farbstoffe enthaltende Mittel zur Färbung von Keratinfasern Cationic naphthyldiazo dyes containing these dyes, and agents for coloring keratin fibers |
| 09/15/2005 | WO2005085362A1 Cationic naphthyldiazo dyes and agents containing said dyes used to colour keratin fibres |
| 09/15/2005 | US20050200671 Trisazo dyes for ink jet printing |
| 09/07/2005 | EP1570004A2 Benzimidazole-pyridone-based azo dyes |
| 09/01/2005 | DE4209261B4 Anionische Disazoverbindungen Anionic diazo compounds |
| 08/18/2005 | WO2005075572A1 Azo compound and polarizing film and polarizing plate each containing the same |
| 08/18/2005 | CA2553415A1 Azo compound and polarizing film and polarizing plate each containing the same |
| 08/11/2005 | WO2005058840A3 Method of coloring with capped diazotized compound and coupling component |
| 07/27/2005 | CN1646643A Coloring composition and inkjet recording method |
| 07/21/2005 | US20050155162 Process for the coloration of aluminium |
| 07/20/2005 | CN1211435C Disazo dyes and inks containing them |
| 07/14/2005 | US20050150420 Aqueous ink |
| 07/13/2005 | EP1553147A1 Aqueous ink |
| 06/30/2005 | WO2005058840A2 Method of coloring with capped diazotized compound and coupling component |
| 06/30/2005 | WO2005058807A1 Magenta dyes and their use in ink-jet printing |
| 06/30/2005 | WO2005040283A3 Disperse azo dyestuffs |
| 06/30/2005 | US20050139123 Heat sensitive recording material, color toner, and color filter |
| 06/22/2005 | EP1203969B1 Polarizer comprising dye |
| 06/09/2005 | WO2005052065A1 Trisazo-dyestuffs |
| 06/08/2005 | EP1537180A1 Process for preparing azo compound |
| 06/07/2005 | US6903198 Compound, dye, ink and ink-jet recording method |
| 06/01/2005 | EP1534789A1 Ink for inkjet recording, ink set for inkjet recording and inkjet recording method |
| 05/06/2005 | WO2005040283A2 Disperse azo dyestuffs |
| 05/06/2005 | CA2543056A1 Disperse azo dyestuffs |
| 04/21/2005 | WO2005035667A1 Dye for anisotropic dye film, dye composition for anisotropic dye film, anisotropic dye film and polarizing device |
| 04/21/2005 | US20050083391 Azo dye, image-forming coloring composition, ink for ink jet recording, heat-sensitive recording material, color toner and color filter |
| 04/07/2005 | US20050074684 azo dye having a specific structure containing an alkyl chain and not containing an ionic hydrophilic group; a color toner composition; good color hue and high fastness |
| 03/30/2005 | EP1518907A1 Aqueous ink and inkjet recording ink |
| 03/24/2005 | US20050061201 disazo dye with an ionic hydrophilic group, aromatic and thiophene groups; storage stability, oxidation and water resistance, light and colorfast |
| 03/01/2005 | US6861106 Dichroic dye, composition thereof, and liquid crystal composition and liquid crystal display element containing the same |
| 02/16/2005 | EP1506261A1 Trisazo dyes for ink jet printing |
| 02/16/2005 | EP1506260A1 Trisazo dyes for ink jet printing |
| 01/26/2005 | CN1186395C Modified weak acid red pigment |
| 01/12/2005 | EP1495080A1 Coloring composition and inkjet recording method |
| 01/12/2005 | CN1563203A Pigment of chirality bisazo and application |
| 01/06/2005 | US20050004260 Ink and ink set for inkjet, and inkjet recording method |
| 01/06/2005 | US20050003109 Dye type polarizing plate |
| 12/29/2004 | WO2004113463A1 Ink and ink-jet recording ink |
| 11/18/2004 | DE19752665B4 Azofarbstoffe Azo dyes |
| 11/17/2004 | CN1546575A Bisazo solvent dye preparation method and uses |
| 11/10/2004 | CN1175289C Polyvinyl alcohol type polarization film, polyvinyl alcohol type polarization plate and colored LCD projector with the polarization plate |
| 11/03/2004 | CN1174051C 1,1'-di-2-naphthol serial polyazo dyes |
| 10/28/2004 | WO2004092282A1 Azo compound and salt thereof |
| 10/28/2004 | US20040213947 Optical information-recording medium and dye |
| 10/21/2004 | WO2004090045A1 Methanesulfoamide azo dye |
| 10/21/2004 | DE10316402A1 Methansulfonamid-Azofarbstoffe Methanesulfonamide azo dyes |
| 10/21/2004 | CA2521861A1 Methanesulfonamide azo dyes |