US PATENT SUBCLASS 564 / 283
.~.~.~.~ Two rings bonded directly to the same carbon

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}
283.~.~.~.~ Two rings bonded directly to the same carbon

DEFINITION

Classification: 564/283

(under subclass 282) Compounds wherein the quaternary ammonium contains two rings bonded directly to the same carbon.

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