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Class Information
Number: 534/787
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Azo > Hetero ring containing > Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos > The hetero ring is one of the cyclos in a polycyclo ring system
Description: Compounds wherein the hetero ring is one of the cyclos of a polycyclo ring system.

Sub-classes under this class:

Class Number Class Name Patents
534/789 Chalcogen double bonded directly to the hetero ring 45
534/788 The hetero ring consists of sulfur, nitrogen and carbon (e.g., benzothiazole, etc.) 133
534/790 The hetero ring is five-membered and consists of one nitrogen and four carbons (e.g., indole, etc.) 47

Patents under this class:
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Patent Number Title Of Patent Date Issued
4085098 Azo dyes containing a heterocyclic ring having a quaternized nitrogen atom and at least one optionally substituted phenoxyalkyl or naphthyloxyalkyl substituent Apr. 18, 1978
4073781 Method of production of azo dyes from a quinone containing compound and a diazonium compound Feb. 14, 1978
4055556 Monoazo and disazo compounds having optionally further substituted 2-acyl-, carboxy- or cyano-benzothienyl diazo component radicals Oct. 25, 1977
4052374 Unsymmetrical 1:2-chromium complexes containing an azo compound and an azomethine compound Oct. 4, 1977
4045430 Conversion of o-halogenoazo compound to o-cyanoazo compound by reaction with a zinc cyanide Aug. 30, 1977
4041025 P-Aminoazo disperse dyes Aug. 9, 1977
4031111 Macrocyclic hetero imine complexing agents Jun. 21, 1977
4015937 Process for detecting the completion of the sterilizing treatment using a color changing indicator composition Apr. 5, 1977
4008212 Monoazo dye mixtures derived from 7-amino-4-nitrobenzotriazole and bis-hydroxyalkylamino acylanilides reacted with acid halides and amides Feb. 15, 1977
4008211 Betainic azo dyestuffs containing cobalt in complex union with a colorless, tridentate ligand Feb. 15, 1977
4008213 Azo dyestuffs containing a cinnamonitrile residue Feb. 15, 1977
4007165 Unsymmetrical tertiary-aliphatic azoalkanes Feb. 8, 1977
4000965 Metal complex dyestuffs Jan. 4, 1977
3985499 Diazamerocyanines for dyeing keratinous fibers Oct. 12, 1976
3985726 Benzisothiazole and indazole azo compounds Oct. 12, 1976
3980632 Basic azo dyes having a quaternized s-triazolo-[2,3-a]-pyrimidine diazo component radical Sep. 14, 1976
3979386 Iminoisoindoline pigments and processes for the preparation thereof Sep. 7, 1976
3978074 Method of making hydroxyarylbenzotriazoles and their N-oxides Aug. 31, 1976
3956264 Basic azo dyestuffs having indolyl-methyleneamino substituent in the diazo component May. 11, 1976
3951592 Polyester fabric materials dyed with monoazo dyes made from 4-amino-7-nitrobenzotriazole Apr. 20, 1976
3945991 Heterocyclic azo compounds containing a quaternated hydrazide group Mar. 23, 1976
3935182 Water-soluble quaternary ammonium heterocyclic azo dyestuffs Jan. 27, 1976

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