US PATENT SUBCLASS 568 / 651
.~.~.~.~.~.~.~ Plural ether oxygens bonded directly to the benzene ring

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}
579  DF  .~.~ Ethers {11}
626  DF  .~.~.~ Benzene ring containing {7}
630  DF  .~.~.~.~ Ether oxygen bonded directly to benzene ring {5}
648  DF  .~.~.~.~.~ Polyoxy {3}
650  DF  .~.~.~.~.~.~ Hydroxy bonded directly to the benzene ring (H of -OH may be replaced by a Group IA or IIA light metal) {2}
651.~.~.~.~.~.~.~ Plural ether oxygens bonded directly to the benzene ring

DEFINITION

Classification: 568/651

Plural ether oxygens bonded directly to the benzene ring:

(under subclass 650) Compounds wherein two or more ether oxygens are bonded directly to the benzene ring.