US PATENT SUBCLASS 534 / 660
.~.~ Hydroxy and carbonyl of -C00- bonded directly to a monocyclic benzene ring (H or hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a metal)

Current as of: June, 1999
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534 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8}
573  DF  .~ Azo {51}
660.~.~ Hydroxy and carbonyl of -C00- bonded directly to a monocyclic benzene ring (H or hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a metal) {5}
661  DF  .~.~.~> Heavy metal or aluminum containing {2}
664  DF  .~.~.~> Hetero ring containing {1}
666  DF  .~.~.~> At least three azo groups attached indirectly to each other by nonionic bonding {3}
670  DF  .~.~.~> Two azo groups attached indirectly to each other by nonionic bonding {1}
674  DF  .~.~.~> Sulfonic acid group containing (-(0=)S(=0)-OH, wherein H of -OH may be replaced by a substituted or unsubstituted ammonium ion or metal) {1}

DEFINITION

Classification: 534/660

(under subclass 573) Compounds in which -OH and the carbon of a --O- group are both bonded directly to the same monocyclic benzene ring, wherein -H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or a metal.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]