US PATENT SUBCLASS 558 / 272
.~.~.~ Nitrogen bonded directly to the benzene ring

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}
260  DF  .~ Carbonate esters (i.e, compounds having the -O-C(=O)O- group bonded directly to at least one carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {8}
270  DF  .~.~ Benzene ring bonded directly to the -O-C(=O)O- group {4}
272.~.~.~ Nitrogen bonded directly to the benzene ring

DEFINITION

Classification: 558/272

(under subclass 270) Compounds wherein the benzene ring is bonded directly to nitrogen.

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