US PATENT SUBCLASS 534 / 725
.~.~.~.~.~ Amino nitrogen containing

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

*  DD  ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8}
573  DF  .~ Azo {51}
692  DF  .~.~ Heavy metal or aluminum containing {7}
713  DF  .~.~.~ Benzene ring containing {6}
724  DF  .~.~.~.~ Sulfonic acid group containing (-(0=)S(=0)-OH, wherein H of -OH may be replaced by the ammonium ion or a metal) {1}
725.~.~.~.~.~ Amino nitrogen containing

DEFINITION

Classification: 534/725

(under subclass 724) Compounds which contain an amino nitrogen.

(1) Note. An example of a compound provided for herein is: [figure]