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Class Information
Number: 534/843
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Azo > Exactly one azo group containing or azo attached indirectly to an additional azo group by ionic bonding > Plural benzene rings bonded directly to the azo group > Each of the benzene rings is monocyclic
Description: Compounds in which each of the benzene rings is monocyclic, i.e., neither bridged nor fused.

Sub-classes under this class:

Class Number Class Name Patents
534/850 Containing -c(=x)-, wherein x is chalcogen 107
534/856 Nitrogen, other than as nitro or nitroso, attached indirectly to the azo group by nonionic bonding 100
534/844 Sulfonyl containing 40

Patents under this class:
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Patent Number Title Of Patent Date Issued
8585938 UV-absorbers for ophthalmic lens materials Nov. 19, 2013
8357210 Disazo acid dyes Jan. 22, 2013
8329775 Visible light absorbers for ophthalmic lens materials Dec. 11, 2012
8314214 Synthesis of azo bonded immunoregulatory compounds Nov. 20, 2012
8242144 Stilbenes and chalcones for the prevention and treatment of cardiovascular diseases Aug. 14, 2012
8207244 Visible light absorbers for ophthalmic lens materials Jun. 26, 2012
7750130 Azobenzene derivative, fluorescent particle and method of fabricating the same Jul. 6, 2010
7335752 Azobenzene derivative compound, particle and method of fabricating the same Feb. 26, 2008
7074906 Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols Jul. 11, 2006
6602987 Azobenzene derivatives as labeling agents and intermediates thereof Aug. 5, 2003
6566507 Processes for the preparation of benzotriazole UV absorbers May. 20, 2003
6184363 Inhibitors of .beta.-lactamases and uses therefor Feb. 6, 2001
6124504 Process for preparing 4-hydroxyanilines Sep. 26, 2000
5827332 Azo dyes and a method of making a hydrocarbon using an azo dye Oct. 27, 1998
5719270 Azophenyl compounds Feb. 17, 1998
5705676 Chromogenic leuco redox-dye-releasing compounds for photothermographic elements Jan. 6, 1998
5463138 Process for preparing difluoromethoxyarenes and difluoromethylthioarenes Oct. 31, 1995
5436322 Azo coupling of 2-nitroanilines with 2,4,-disbustituted phenols Jul. 25, 1995
5349109 Molybdenum-catalyzed amination of olefins Sep. 20, 1994
5340931 Aromatic allene compounds of the formula (CH.sub.2 .dbd.CH--O).sub.n --R--(A.sub.m in which R is an aromatic group and preparation thereof Aug. 23, 1994
5314997 Optically active azo compound, producing method thereof, and liquid crystal composition containing said compound May. 24, 1994
5288908 Process for the preparation of fluorine containing monomers Feb. 22, 1994
5281241 Polycyclic dyes Jan. 25, 1994
5196518 Process for the preparation of metallizable azo dyes by carrying out the coupling in the presence of a buffer mixture Mar. 23, 1993
5032572 Polymers containing cross-linked azo bonds, which polymers are useful for releasing therapeutic agents into the lower gastrointestinal tract Jul. 16, 1991
4952677 Azo colorants for ball point pen and ribbon inks Aug. 28, 1990
4910299 Disperse azo dyes containing N-phenoxyalkyleneanilines as coupling components Mar. 20, 1990
4906741 Azo dimers containing the hexafluoroisopropylidene group Mar. 6, 1990
4906739 Fibre-reactive azo dyes containing a monofluororotriazine group Mar. 6, 1990
4891424 4-aralkyl-2-nitro-2'-hydroxy-3',5'-dialkyl (or cumyl)-azobenzenes Jan. 2, 1990
4889923 AZO compounds containing cyano and vinyl-sulfone groups, a process for their preparation and their use as dyestuffs Dec. 26, 1989
4841009 Substantially linear monomeric composition and liquid crystal polymeric compositions derived therefrom Jun. 20, 1989
4802889 2-cyano-4,6-dinitrophenyl mono-azo dyes for polyester and cellulose acetate Feb. 7, 1989
4751289 Hexanitrotetrachloroazobenzene and method of preparation Jun. 14, 1988
4704452 Azo dyes containing aralkyl-nitrophenyl diazo components Nov. 3, 1987
4670112 Process for preparing p-amino phenols by electrolysis Jun. 2, 1987
4663308 Method of use of polymers containing cross-linked azo bonds for releasing therapeutic agents into the lower gastrointestinal tract May. 5, 1987
4661438 Quaternized tellurium salt fog inhibiting agents for silver halide photography Apr. 28, 1987
4582509 Mixtures of monoazo dyestuffs Apr. 15, 1986
4537597 Navy blue mixtures of disperse mono-azo dyes for cellulose acetate Aug. 27, 1985
4395350 Liquid crystal mixtures Jul. 26, 1983
4374769 Water-soluble tris phenyl bisazo dyes for polyamide fibers Feb. 22, 1983
4347180 High caustic coupling process for preparing substituted 2-nitro-2'-hydroxyazobenzenes Aug. 31, 1982
4331596 Arylazoarylazo-substituted azo, azomethine 1:2 chromium complex dyes May. 25, 1982
4275004 High caustic coupling process for preparing substituted 2-nitro-2'-hydroxyazobenzenes Jun. 23, 1981
4226763 2-[2-Hydroxy-3,5-di-(. alpha.,.alpha.-dimethylbenzyl)-phenyl]-2H-benzotriazole and stabilized compositions Oct. 7, 1980
4219473 Substituted unsymmetrical azo, azomethine 1:2 chromium complexes Aug. 26, 1980
4216147 N-methyl-N-(substituted carbonylaminothio)carbamates Aug. 5, 1980
4212803 Cationic azo dyestuffs containing oxyalkylene substituent Jul. 15, 1980
T994003 Azo dyes, azo dye-releasing compounds and photographic products and processes employing them May. 6, 1980

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