US PATENT SUBCLASS 534 / 828
.~.~.~.~ Plural bicyclo ring systems, each having hydroxy bonded directly thereto

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}
816  DF  .~.~ Exactly two azo groups attached indirectly to each other by nonionic bonding {7}
827  DF  .~.~.~ Hydroxy bonded directly to a bicyclo ring system which is between the azo groups (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) {1}
828.~.~.~.~ Plural bicyclo ring systems, each having hydroxy bonded directly thereto

DEFINITION

Classification: 534/828

(under subclass 827) Compounds which contain at least two bicyclo ring systems, each of which has an -OH group bonded directly thereto.

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