US PATENT SUBCLASS 534 / 753
.~.~.~ Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos


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.~.~.~ Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos {11}
754  DF  .~.~.~.~> At least three azo groups attached indirectly to each other by nonionic bonding {1}
756  DF  .~.~.~.~> Two azo groups attached indirectly to each other by nonionic bonding {5}
765  DF  .~.~.~.~> Additional hetero ring or polycyclo ring system which contains a hetero ring as one of the cyclos bonded directly to the azo group {2}
770  DF  .~.~.~.~> The hetero ring is six-membered and consists of one nitrogen and five carbons (e.g., pyridine, etc.) {2}
774  DF  .~.~.~.~> Additional hetero ring attached indirectly to the azo group by nonionic bonding {3}
778  DF  .~.~.~.~> Bicyclo carbocyclic ring system bonded directly to the azo group {2}
781  DF  .~.~.~.~> Sulfonic acid group containing (-(0=)S(=0)-OH, wherein H of the -OH may be replaced by the ammonium ion or a Group IA or IIA light metal) {3}
787  DF  .~.~.~.~> The hetero ring is one of the cyclos in a polycyclo ring system {3}
791  DF  .~.~.~.~> Carbocyclic ring bonded directly to the hetero ring or to the polycyclo ring system which contains the hetero ring {1}
794  DF  .~.~.~.~> Carbocyclic ring attached indirectly to the azo group by nonionic bonding
795  DF  .~.~.~.~> The hetero ring is five-membered and contains at least one atom each of sulfur, nitrogen and carbon


DEFINITION

Classification: 534/753

(under subclass 751) Compounds in which an azo group is bonded direclty to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos.