US PATENT SUBCLASS 534 / 603
.~.~ Quaternary ammonium or hydrazinium attached indirectly to an azo group by nonionic bonding

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}
603.~.~ Quaternary ammonium or hydrazinium attached indirectly to an azo group by nonionic bonding {4}
604  DF  .~.~.~> Hetero ring containing {1}
613  DF  .~.~.~> Heavy metal or aluminum containing
614  DF  .~.~.~> Plural azo groups attached indirectly to each other by nonionic bonding
615  DF  .~.~.~> Plural nitrogens bonded directly to the same alkylene chain (e.g., diamino alkylene, etc.)

DEFINITION

Classification: 534/603

(under subclass 573) Compounds wherein a pentavalent nitrogen having four bonds to carbons or three bonds to carbons and one to an additional nitrogen is attached indirectly to an azo group by nonionic bonding.

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