US PATENT SUBCLASS 534 / 717
.~.~.~.~.~ Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl, etc.)

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}
692  DF  .~.~ Heavy metal or aluminum containing {7}
713  DF  .~.~.~ Benzene ring containing {6}
716  DF  .~.~.~.~ Two azo groups in the same azo moiety attached indirectly to each other by nonionic bonding {2}
717.~.~.~.~.~ Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl, etc.) {1}
718  DF  .~.~.~.~.~.~> Plural monocyclic benzene rings attached directly or indirectly to each other by acyclic nonionic bonding and are between the azo groups

DEFINITION

Classification: 534/717

(under subclass 716) Compounds which contain a -C- group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium.

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