Resources Contact Us Home
Browse by Category: Main > Chemistry
Class Information
Number: 534/783
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 > Sulfonic acid group containing (-(0=)s(=0)-oh, wherein h of the -oh may be replaced by the ammonium ion or a group ia or iia light metal) > Additional sulfonyl containing
Description: Compounds which contain an additional -- group.

Sub-classes under this class:

Class Number Class Name Patents
534/784 Plural sulfonic acid groups 48

Patents under this class:

Patent Number Title Of Patent Date Issued
7220843 Methanesulfonamide azo dyes May. 22, 2007
7125443 Lightfast colorant and lightfast ink composition including the same Oct. 24, 2006
5746821 Pigment compositions May. 5, 1998
5278291 Hydroxyethylthio hydroxyethylamino-phenyl-azo and -azoxy dyestuffs Jan. 11, 1994
5106960 Azo dyes and the production and use thereof Apr. 21, 1992
4997921 Substituted phenylazosulfoindole dyes Mar. 5, 1991
4954563 Monoazo dyes containing sulfoindole coupling components Sep. 4, 1990
4906740 Monoazo dyes containing as the azo component A phenylsulfonylphenyl radical Mar. 6, 1990
4843151 Monoazo dyes containing a 4'-methyl-3'-sulfo-5-acylamino-2-azo-1,1'-diphenylsulfone component Jun. 27, 1989
4734490 Water soluble phthalimide-azo-aniline dyes and mixtures thereof Mar. 29, 1988
4652633 Sulfo-containing halophenylazodiamino, cyano pyridine compounds Mar. 24, 1987
4602084 Monoazo dyes containing a 4-substituted-2-azo-1,1'-diphenylsulfone component Jul. 22, 1986
4582897 Azo dyes Apr. 15, 1986
4554348 2-Amino-cinnamoylthiophene acid azo dye compounds having an aniline, tetrahydroquinoline, or benzomorpholine coupler Nov. 19, 1985
4518435 Dispersing agent for solids in polar organic liquids May. 21, 1985
4459229 Heterocyclic azo dyes with couplers having sulfoaralkyl groups Jul. 10, 1984
4444684 Azo dyes containing a diazotized 5-amino isothiazol moiety having thereon a sulfonic acid or salt group Apr. 24, 1984
4282144 Azo dyes derived from 5-membered heterocyclic amines and aromatic amine couplers containing sulfo groups, or salts thereof Aug. 4, 1981
4215042 Copper, and nickel complexes of azo dyestuffs Jul. 29, 1980
4125368 Metallized monoazo dyes Nov. 14, 1978
4058515 Metallized phenyl-azo-naphthol compounds Nov. 15, 1977
4035350 Process for the preparation of water-soluble azo dyestuffs by reacting an aromatic amine and a coupling component with alkali metal nitrite or alkyl nitrite in the absence of acid Jul. 12, 1977
3987026 Transiently water-soluble non-heterocyclic azo and disazo disperse dyestuffs Oct. 19, 1976
3941765 Process for the manufacture of symmetric 1:2 chromium complexes of azo dyes Mar. 2, 1976

  Recently Added Patents
Repeating frame battery with joining of cell tabs via welded-on male and female slip-fit connectors
3D solid-state arrangement for solid state memory
Bread basket
Nonvolatile semiconductor memory device and method for controlling the same
Managing job execution
360-degree angle decoder
Multi-radio coexistence
  Randomly Featured Patents
Self-supporting sign and method of manufacturing same
Nonlinear digital differential amplifier offset calibration
Olefin polymer films
Liquid crystal compositions
Biological method for removing phosphorus and nitrogen from water using granulated methane-oxidizing bacteria
Method for fabricating a solid surface countertop in a mobile fabrication unit
Method and apparatus for detecting clock gating opportunities in a pipelined electronic circuit design
Semiconductor device
Wireless communication method, base station apparatus and wireless communication system
Method and device for the manufacture of footwear