US PATENT SUBCLASS 534 / 657
.~.~.~ The polycyclo ring system has no azo group 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}
653  DF  .~.~ Polycyclo carbocyclic ring system having at least three cyclos {3}
657.~.~.~ The polycyclo ring system has no azo group bonded directly thereto

DEFINITION

Classification: 534/657

(under subclass 653) Compounds wherein the polycyclo ring system has no direct bond to any azo group.

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