US PATENT SUBCLASS 556 / 411
.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen

Current as of: June, 1999
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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
400  DF  .~ SILICON CONTAINING {19}
410  DF  .~.~ Nitrogen attached directly to silicon by nonionic bonding {2}
411.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the nitrogen

DEFINITION

Classification: 556/411

(under subclass 410) Compounds wherein the nitrogen is bonded directly to a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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