US PATENT SUBCLASS 534 / 668
.~.~.~.~ Additional monocyclic benzene ring having plural hydroxy groups, hydroxy and nitrogen, or plural nitrogens bonded directly thereto, wherein the nitrogen is other than as nitro, nitroso or azo

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  DF  .~.~ 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}
666  DF  .~.~.~ At least three azo groups attached indirectly to each other by nonionic bonding {3}
668.~.~.~.~ Additional monocyclic benzene ring having plural hydroxy groups, hydroxy and nitrogen, or plural nitrogens bonded directly thereto, wherein the nitrogen is other than as nitro, nitroso or azo

DEFINITION

Classification: 534/668

(under subclass 666) Compounds which contain an additional monocyclic benzene ring which has either plural hydroxy groups, hydroxy and nitrogen, or plural nitrogens bonded directly to it; wherein the nitrogen is other than as nitro, nitroso or azo.

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