US PATENT SUBCLASS 568 / 938
.~.~.~.~.~.~ Plural halogens bonded directly to 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}
924  DF  .~.~ Nitro containing (including aci forms) {6}
927  DF  .~.~.~ Benzene ring containing {4}
936  DF  .~.~.~.~ Halogen containing {1}
937  DF  .~.~.~.~.~ Halogen bonded directly to benzene ring {1}
938.~.~.~.~.~.~ Plural halogens bonded directly to benzene ring

DEFINITION

Classification: 568/938

(under subclass 937) Compounds wherein at least two halogens are directly bonded to the benzene ring.