US PATENT SUBCLASS 562 / 454
.~.~.~.~.~ Aryl-N-Aryl


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
400  DF  .~ Carboxylic acids and salts thereof {14}
405  DF  .~.~ Aromatic {13}
433  DF  .~.~.~ Nitrogen bonded directly to carbon of organic radical (e.g., amino acids, etc.) {9}
452  DF  .~.~.~.~ Oxy {3}
454.~.~.~.~.~ Aryl-N-Aryl


DEFINITION

Classification: 562/454

Aryl-N-Aryl:

(under subclass 452) Compounds wherein the acid contains two aromatic nuclei attached to the same nitrogen.

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