US PATENT SUBCLASS 534 / 757
.~.~.~.~.~ Additional hetero ring or polycyclo ring system which contains a hetero ring as one of the cyclos bonded directly to an azo group


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}
757.~.~.~.~.~ Additional hetero ring or polycyclo ring system which contains a hetero ring as one of the cyclos bonded directly to an azo group {2}
758  DF  .~.~.~.~.~.~> Both hetero rings or polycyclo ring systems are between the azo groups
759  DF  .~.~.~.~.~.~> Plural monocyclic benzene rings, each bonded directly to an azo group, are between the azo groups {1}


DEFINITION

Classification: 534/757

(under subclass 756) Compounds in which an additional hetero ring or an additional polycyclo ring system having a hetero ring as one of the cyclos is bonded directly to an azo group.

(1)

Noted. An example of a compound provided for herein is: [figure]