US PATENT SUBCLASS 568 / 820
.~.~.~.~.~.~ The two cyclos share at least three ring carbons (i.e., bridged ring)


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568 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
700  DF  .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
816  DF  .~.~.~ Plural alicyclic rings containing {1}
817  DF  .~.~.~.~ Polycyclo ring system {2}
819  DF  .~.~.~.~.~ Bicyclo ring system {1}
820.~.~.~.~.~.~ The two cyclos share at least three ring carbons (i.e., bridged ring)


DEFINITION

Classification: 568/820

The two cyclos share at least three ring carbons (i.e., bridged ring):

(under subclass 819) Compounds wherein the two rings share at least three carbons.

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