US PATENT SUBCLASS 564 / 281
.~.~ Quaternary ammonium containing

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.~.~ Quaternary ammonium containing {2}
282  DF  .~.~.~> Benzene ring containing {6}
291  DF  .~.~.~> Acyclic {3}

DEFINITION

Classification: 564/281

(under subclass 1) Compounds which are quaternary ammonium compounds wherein a pentavalent nitrogen is bonded by four valences to carbon.

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