US PATENT SUBCLASS 534 / 679
.~.~.~.~.~ Plural monocyclic benzene rings, each having -OH and -HNH or plural -HNH groups bonded directly thereto

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}
676  DF  .~.~ Plural -HNH groups or -OH and -HNH bonded directly to a monocyclic benzene ring (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or metal) {2}
677  DF  .~.~.~ Plural azo groups in the same azo moiety attached indirectly to each other by nonionic bonding {1}
678  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) {2}
679.~.~.~.~.~ Plural monocyclic benzene rings, each having -OH and -HNH or plural -HNH groups bonded directly thereto

DEFINITION

Classification: 534/679

(under subclass 678) Compounds which contain at least two of the monocyclic rings, each of which has plural -NH2 groups or a -NH2 group and an -OH group bonded directly to it.

(1) Note. An example of a compound provided for herein is: [figure]