US PATENT SUBCLASS 568 / 931
.~.~.~.~.~ Polynitro

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}
924  DF  .~.~ Nitro containing (including aci forms) {6}
927  DF  .~.~.~ Benzene ring containing {4}
928  DF  .~.~.~.~ Plural rings containing {2}
931.~.~.~.~.~ Polynitro

DEFINITION

Classification: 568/931

(under subclass 928) Compounds which contain at least two -NO2 groups.