US PATENT SUBCLASS 558 / 269
.~.~.~.~ Nitrogen attached directly or indirectly to the benzene ring by nonionic bonding

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}
265  DF  .~.~ Plural -O-C(=O)O- groups attached indirectly to each other by nonionic bonding {2}
268  DF  .~.~.~ Benzene ring attached directly or indirectly to one of the -O-C(=O)O- groups by nonionic bonding {1}
269.~.~.~.~ Nitrogen attached directly or indirectly to the benzene ring by nonionic bonding

DEFINITION

Classification: 558/269

(under subclass 268) Compounds in which the benzene ring is attached directly or indirectly to nitrogen by nonionic bonding.

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