US PATENT SUBCLASS 534 / 653
.~.~ Polycyclo carbocyclic ring system having at least three cyclos

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.~.~ Polycyclo carbocyclic ring system having at least three cyclos {3}
654  DF  .~.~.~> The polycyclo ring system consists of three six-membered cyclos and has plural oxygens bonded directly thereto {2}
657  DF  .~.~.~> The polycyclo ring system has no azo group bonded directly thereto
658  DF  .~.~.~> Chalcogen double bonded directly to the polycyclo ring system

DEFINITION

Classification: 534/653

(under subclass 573) Compounds which contain a polycyclo carbocyclic ring system having at least three cyclos.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]