US PATENT SUBCLASS 564 / 433
.~.~.~.~ Two benzene rings bonded directly to the same nitrogen

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


564 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
305  DF  .~.~ Benzene ring containing {24}
431  DF  .~.~.~ Two carbocyclic rings, at least one of which is benzene, bonded directly to the same nitrogen {2}
433.~.~.~.~ Two benzene rings bonded directly to the same nitrogen {2}
434  DF  .~.~.~.~.~> Additional amino nitrogen containing
435  DF  .~.~.~.~.~> Preparing directly by condensing a primary amine

DEFINITION

Classification: 564/433

(under subclass 431) Compounds which are diphenylamines wherein two benzene rings are bonded directly to the same nitrogen.

(1) Note. This subclass contains, for example: [figure] [figure]