US PATENT SUBCLASS 534 / 785
.~.~.~.~.~ Containing acyclic -C(=X)-, wherein X is chalcogen

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}
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}
785.~.~.~.~.~ Containing acyclic -C(=X)-, wherein X is chalcogen {1}
786  DF  .~.~.~.~.~.~> The -C(=X)- is bonded directly to nitrogen

DEFINITION

Classification: 534/785

(under subclass 781) Compounds which contain an acyclic -- group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium).

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