US PATENT SUBCLASS 534 / 761
.~.~.~.~.~ Both azo groups are bonded directly to the hetero ring or to the polycyclo ring system

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}
751  DF  .~.~ Hetero ring containing {5}
753  DF  .~.~.~ Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos {11}
756  DF  .~.~.~.~ Two azo groups attached indirectly to each other by nonionic bonding {5}
761.~.~.~.~.~ Both azo groups are bonded directly to the hetero ring or to the polycyclo ring system

DEFINITION

Classification: 534/761

(under subclass 756) Compounds in which both azo groups are bonded directly to the same hetero ring or to the same polycyclo ring system.

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