US PATENT SUBCLASS 568 / 747
.~.~.~.~.~.~.~.~ Rings bonded directly to each other


Current as of: June, 1999
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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}
715  DF  .~.~.~ Benzene ring containing {8}
716  DF  .~.~.~.~ Phenols (H of -OH may be replaced by a Group IA or IIA light metal) {14}
731  DF  .~.~.~.~.~ Additional ring containing {2}
743  DF  .~.~.~.~.~.~ The additional ring is six-membered {1}
744  DF  .~.~.~.~.~.~.~ The additional ring is benzene {2}
747.~.~.~.~.~.~.~.~ Rings bonded directly to each other {1}
748  DF  .~.~.~.~.~.~.~>.~.~ Purification or recovery


DEFINITION

Classification: 568/747

Rings bonded directly to each other:

(under subclass 744) Compounds wherein two rings are bonded directly to each other.