| Patents for C09B 43 - Preparation of azo dyes from other azo compounds (1,452) |
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| 02/12/2004 | CA2493627A1 Anionic monoazo dyes |
| 02/04/2004 | EP1385914A1 Dichroic mixture |
| 01/29/2004 | WO2002090447A8 Dichroic mixture |
| 01/22/2004 | WO2004007619A1 Disazo dyes and ink jet inks containing them |
| 01/22/2004 | WO2004007618A1 Disazo dyes and ink jet inks containing them |
| 01/22/2004 | US20040013375 Novel substituted-polyaryl chromophoric compounds |
| 01/07/2004 | EP1378549A1 Aqueous ink composition, water-soluble dye composition and ink-jet recording method |
| 01/07/2004 | EP1377641A1 Azo dyes |
| 01/07/2004 | EP1377640A2 Azo compounds and process of producing the same and novel intermediate compounds used in the process of producing azo compounds |
| 01/07/2004 | EP1377265A1 Dyeing composition for dyeing keratinous fibres comprising a cationic azo-dye |
| 01/07/2004 | EP1377264A1 Dyeing composition for dyeing keratinous fibres comprising a cationic azo-dye |
| 01/07/2004 | EP1377262A1 Dyeing composition for dyeing keratinous fibres comprising a cationic azo-dye |
| 01/06/2004 | US6673906 β modified monoazo dye resistant to dyeing, its preparation and use |
| 12/03/2003 | EP1161499B1 Azoxy dyes and their cu complexes |
| 11/05/2003 | EP1358274A1 Phthalimidyl azo dyes, process for their preparation and the use thereof |
| 10/21/2003 | US6635747 Dyes, inks and their use in ink-jet printing |
| 09/25/2003 | WO2002033005A3 Novel substituted-polyaryl chromophoric compounds |
| 09/25/2003 | US20030177591 Method of dyeing keratin-containing fibers |
| 09/17/2003 | EP1343849A2 Method of printing sheet-form substrates by the inkjet printing process |
| 09/10/2003 | EP1341852A1 Use of disazo compounds |
| 09/04/2003 | WO2003072657A1 Process for the preparation of cationic azo compounds |
| 09/02/2003 | US6613888 Azo dyes, process for making the same, ink-jet printing ink, ink-jet recording method |
| 08/27/2003 | EP1337591A2 Polymeric bis-acetoacetanilide azo colorants |
| 08/26/2003 | US6610132 Compositions containing a liquid medium and an azo dye |
| 08/06/2003 | EP1185588B1 Anthraquinone-azo dyes and use of such compounds |
| 07/10/2003 | US20030127017 Counterion use for reduction of decap and for improvement of durability of inkjet images |
| 07/09/2003 | EP1325085A1 Cationic imidazole azo dyes |
| 07/09/2003 | EP1324741A1 Method of dyeing keratin-containing fibres |
| 06/26/2003 | WO2003052007A1 Use of a dyestuff for ink jet printing recording materials . |
| 06/26/2003 | WO2003052006A1 Acidic mono azo dyestuffs |
| 06/26/2003 | US20030120047 Dyes, inks and their use in ink-jet printing |
| 06/26/2003 | CA2461751A1 Use of a dyestuff for ink jet printing recording materials |
| 06/26/2003 | CA2461750A1 Acidic mono azo dyestuffs |
| 06/25/2003 | EP1037948B1 Mono-azo dyes and inks for ink-jet printing |
| 05/14/2003 | EP1310533A2 Ink composition containing a particular type of dye, and corresponding ink jet printing process |
| 05/13/2003 | US6562115 Azo dyes and their preparation and use |
| 05/07/2003 | EP1308482A1 Counterion use for reduction of decap and for improvement of durability of images |
| 05/01/2003 | US20030079648 Water-based ink and process for production of dyes |
| 04/29/2003 | US6555664 Phthalimidyl azo pigments, method for producing same and utilisation thereof |
| 04/10/2003 | WO2003029363A1 Water-color ink |
| 04/09/2003 | CN1105152C Monoazo dyes and ink containing them |
| 03/06/2003 | WO2002083662A3 Azo compounds and process of producing the same and novel intermediate compounds used in the process of producing azo compounds |
| 02/27/2003 | US20030040608 Having good hue and capable of forming images having high lightfastness |
| 02/12/2003 | CN1101427C Mono-and disazo reactive dyes |
| 02/11/2003 | US6517620 Mono-azo dyes and inks for ink-jet printing |
| 02/06/2003 | WO2003010239A1 Dyes incorporating anionic and cationic groups |
| 02/06/2003 | US20030024435 Based on navy blue copper complex azo or copper complex formazan dyes |
| 02/06/2003 | CA2452522A1 Dyes incorporating anionic and cationic groups |
| 02/04/2003 | US6514329 Mixtures of azo dyes and water, anhydrous solvents or low melting solids used for applying images having waterproofing, colorfastness, photostability and high optical density on paper, slides or textiles |
| 01/30/2003 | US20030019392 Oil-soluble dye prepared by amidation of a water-soluble dye having at least one sulfonate and/or carboxyl group |
| 01/22/2003 | CN1392894A Water-base ink and process for production of dyes |
| 01/16/2003 | WO2002044283A3 Polymeric bis-acetoacetanilide azo colorants |
| 01/14/2003 | US6506241 Bix-azo naphthylene compounds and their use in compositions and inks for ink-jet printing |
| 01/08/2003 | EP1272567A2 Mono- and bis-hydrazone pigments |
| 01/08/2003 | EP1196500B1 Reactive dye compounds |
| 01/01/2003 | CN1388183A Cationic dye |
| 12/31/2002 | US6500247 Black-dyeing inks and their use |
| 12/19/2002 | WO2002100834A1 Dyeing composition for keratinous fibres comprising a particular dicationic diazo dye |
| 12/05/2002 | WO2002096994A1 Basic mono- and bisazo compounds |
| 12/04/2002 | EP1017744B1 Bridged monoazo compounds |
| 12/03/2002 | US6489452 An azo dye represented by the following general formula (1) and a process for making the azo dye is disclosed. the process comprises a step in which a diazonium salt is formed by the reaction between an aminopyrazole and aromatic coupling agent |
| 11/20/2002 | EP1257601A1 Dyes, inks and their use in ink-jet printing |
| 11/19/2002 | US6482255 Disazodyes for ink jet printing |
| 11/14/2002 | WO2002090447A1 Dichroic mixture |
| 11/13/2002 | EP1256602A1 Dichroic mixture |
| 11/12/2002 | US6479648 Polymeric bis-acetoacetanilide azo colorants |
| 10/31/2002 | WO2002050196A3 Method of printing sheet-form substrates by the inkjet printing process |
| 10/31/2002 | US20020157194 Polymeric bis-acetoacetanilide azo colorants |
| 10/24/2002 | WO2002083662A2 Azo compounds and process of producing the same and novel intermediate compounds used in the process of producing azo compounds |
| 10/23/2002 | EP0994924B1 Monoazo dyes and inks containg them |
| 10/17/2002 | WO2002081580A1 Aqueous ink composition, water-soluble dye composition and ink-jet recording method |
| 10/17/2002 | WO2002081572A1 Azo dyes |
| 10/10/2002 | WO2002078660A1 Dyeing composition for dyeing keratinous fibres comprising a cationic azo-dye |
| 10/10/2002 | WO2002078659A1 Dyeing composition for dyeing keratinous fibres comprising a cationic azo-dye |
| 10/10/2002 | WO2002078658A1 Dyeing composition for dyeing keratinous fibres comprising a cationic azo-dye |
| 10/09/2002 | EP1247846A1 Water-base ink and process for production of dyes |
| 10/09/2002 | EP1141142B1 Improved method for producing thermally cleavable, soluble pigment derivatives |
| 09/26/2002 | WO2002074865A1 Water-soluble disazo compound, water-based black ink composition, and colored object |
| 09/19/2002 | WO2001074950A3 Mono- and bis-hydrazone pigments |
| 09/12/2002 | WO2002070609A1 Ink jet printing composition comprising a dye containing hydrazine or hydrazide |
| 09/06/2002 | WO2002068539A1 Phthalimidyl azo dyes, process for the preparation thereof and the use thereof |
| 09/04/2002 | EP1236779A1 Improved magenta ink formulation |
| 09/03/2002 | US6444020 Tetraalkyl-substituted nitrogen-containing hetero ring-bonded azo dye, ink-jet ink comprising said dye, ink-jet recording method using said ink, and thermal transfer recording material comprising said dye |
| 09/03/2002 | CA2071434C Preparation of acetalized azo dyes |
| 08/28/2002 | EP0994925B1 Composition comprising a copper complex azodye and ink containing it |
| 08/20/2002 | US6437104 Diazotization of aromatic amine, azo coupling to form an azocarboxylic acid or azodicarboxylic acid, formation of an azocarbonyl chloride or azodicarbonyl dichloride and condensation with aromatic diamine |
| 08/13/2002 | US6432185 Ink jets and acid dyes for paper with storage stability |
| 08/07/2002 | EP1228149A1 Disazo dyestuffs for ink jet printing |
| 08/07/2002 | EP1228148A1 Disazo dyestuffs for ink jet printing |
| 07/31/2002 | EP0758672B1 Recording fluid |
| 07/16/2002 | US6419353 Colorfastness, water solubility |
| 07/04/2002 | US20020083532 Anionic coloring agents to dye leather, paper, cardboard and textile substrates: mixtures of coloring agents including these new products, and substrates dyed using the above coloring agents |
| 07/03/2002 | EP1219683A2 Cationic imidazolazo dyestuffs |
| 07/03/2002 | EP1218449A2 Monoazo dyestuffs useful for colour filters and ink jet printing |
| 06/27/2002 | WO2002050196A2 Method of printing sheet-form substrates by the inkjet printing process |
| 06/27/2002 | CA2427456A1 Method of printing sheet-form substrates by the inkjet printing process |
| 06/18/2002 | US6406527 Dyeing and printing natural and synthetic fibers, ink jet process, pulp dyeing of paper; storage stability of, waterfastness, colorfast |
| 06/13/2002 | WO2002046316A1 Use of disazo compounds |
| 06/13/2002 | CA2426534A1 Use of disazo compounds |
| 06/06/2002 | WO2002044283A2 Polymeric bis-acetoacetanilide azo colorants |