US PATENT SUBCLASS 534 / 746
.~.~.~.~.~ Plural benzene rings bonded directly to each other and are between the azo groups

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}
739  DF  .~.~ Azo bonded directly to an acylic carbon which is bonded directly to two acyclic carbons, each of which is double or triple bonded to an atom {6}
744  DF  .~.~.~ Two azo groups attached indirectly to each other by nonionic bonding {1}
745  DF  .~.~.~.~ Each azo group is bonded directly to an acyclic carbon which is bonded directly to two acyclic carbons, each of which is double or triple bonded to an atom {2}
746.~.~.~.~.~ Plural benzene rings bonded directly to each other and are between the azo groups {1}
747  DF  .~.~.~.~.~.~> Each benzene ring is bonded directly to an azo group

DEFINITION

Classification: 534/746

(under subclass 745) Compounds wherein between the azo groups are at least two benzene rings which are bonded directly to each other.

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