US PATENT SUBCLASS 534 / 732
.~.~ Nitrogen, other than as azo, and chalcogen or -C(=X)X- bonded directly to a -C(=X)- group, wherein the X's may be the same or diverse chalcogens (e.g., carbamic, allophanic, 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}
732.~.~ Nitrogen, other than as azo, and chalcogen or -C(=X)X- bonded directly to a -C(=X)- group, wherein the X's may be the same or diverse chalcogens (e.g., carbamic, allophanic, etc.) {1}
733  DF  .~.~.~> Hetero ring cntaining

DEFINITION

Classification: 534/732

(under subclass 573) Compounds wherein nitrogen, other than

as azo, and chalcogen (i.e., oxygen, sulfur, selenium or tellurium) or nitrogen, other than as azo, and --X, wherein the X's may be the same or diverse chalcogens, are bonded directly to the same -- group; e.g., -N--O-, -N---O-, etc.

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