US PATENT SUBCLASS 558 / 483
.~.~ Additional nitrogen or chalcogen containing

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
480  DF  .~ Nitrate esters or chalcogen analogues thereof (i.e., compounds having (X=)N(=X)-X- bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon; the X's may be the same or diverse chalcogens) {3}
483.~.~ Additional nitrogen or chalcogen containing {1}
484  DF  .~.~.~> Plural (X=)N(=X)-X- groups containing {3}

DEFINITION

Classification: 558/483

(under subclass 480) Compounds which contain additional nitrogen or additional chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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