US PATENT SUBCLASS 564 / 287
.~.~.~.~.~ The hydroxy or ether oxygen is bonded directly to a ring

Current as of: June, 1999
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564 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
281  DF  .~.~ Quaternary ammonium containing {2}
282  DF  .~.~.~ Benzene ring containing {6}
285  DF  .~.~.~.~ Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) {2}
287.~.~.~.~.~ The hydroxy or ether oxygen is bonded directly to a ring

DEFINITION

Classification: 564/287

(under subclass 285) Compounds wherein the quaternary ammonium contains an -OX group bonded directly to a ring carbon, where X may be H, C, a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal.

(1) Note. This subclass contains, for example: [figure]