US PATENT SUBCLASS 556 / 416
.~.~.~.~ Chalcogen bonded directly to plural carbons or double-bonded directly to carbon

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}
413  DF  .~.~ Nitrogen attached indirectly to silicon by nonionic bonding {7}
415  DF  .~.~.~ The nitrogen is in a cyano group (i.e., -CN) {2}
416.~.~.~.~ Chalcogen bonded directly to plural carbons or double-bonded directly to carbon

DEFINITION

Classification: 556/416

(under subclass 415) Compounds in which chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to plural carbons or is double-bonded directly to a single carbon.

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

[figure] [figure]