US PATENT SUBCLASS 534 / 716
.~.~.~.~ Two azo groups in the same azo moiety attached indirectly to each other 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}
692  DF  .~.~ Heavy metal or aluminum containing {7}
713  DF  .~.~.~ Benzene ring containing {6}
716.~.~.~.~ Two azo groups in the same azo moiety attached indirectly to each other by nonionic bonding {2}
717  DF  .~.~.~.~.~> Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl, etc.) {1}
719  DF  .~.~.~.~.~> Plural monocyclic benzene rings attached directly or indirectly to each other by acyclic nonionic bonding and are between the azo groups

DEFINITION

Classification: 534/716

(under subclass 713) Compounds in which two azo groups within the same azo moiety are attached indirectly to each other by nonionic bonding.

(1) Note. The term "azo moiety" as used herein is intended to include singularly each of the azo compounds which complex with a heavy metal in the formation of a sandwich-type compound.

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