US PATENT SUBCLASS 552 / 114
.~.~.~ Nitrogen bonded directly to each of the rings (e.g., rosaniline, crystal violet, etc.)


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

*  DD  ORGANIC COMPOUNDS (Class 532, subclass 1) {11}
101  DF  .~ Acyclic carbon bonded directly to three benzene rings or to two benzene rings and a cyclohexadienyl ring, which acyclic carbon may not be bonded to a fourth carbon (e.g., triphenylmethane dyestuffs, etc.) {12}
113  DF  .~.~ Nitrogen bonded directly to one of the rings (e.g., malachite green, rosophenoline, etc.) {1}
114.~.~.~ Nitrogen bonded directly to each of the rings (e.g., rosaniline, crystal violet, etc.)


DEFINITION

Classification: 552/114

(under subclass 113) Compounds wherein each of the rings is bonded directly to nitrogen.