US PATENT SUBCLASS 534 / 855
.~.~.~.~.~.~ Chalcogen, having no direct bond to a ring, attached directly by a single bond to acyclic carbon

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}
838  DF  .~.~ Exactly one azo group containing or azo attached indirectly to an additional azo group by ionic bonding {3}
839  DF  .~.~.~ Plural benzene rings bonded directly to the azo group {5}
843  DF  .~.~.~.~ Each of the benzene rings is monocyclic {3}
850  DF  .~.~.~.~.~ Containing -C(=X)-, wherein X is chalcogen {3}
855.~.~.~.~.~.~ Chalcogen, having no direct bond to a ring, attached directly by a single bond to acyclic carbon

DEFINITION

Classification: 534/855

(under subclass 850) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium), which has no direct bond to any ring, is attached by a single bond to acyclic carbon.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]