US PATENT SUBCLASS 514 / 648
.~.~.~ Two aryl rings or aryl ring systems bonded directly to the same acyclic carbon

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
579  DF  .~ Nitrogen containing other than solely as a nitrogen in an inorganic ion of an addition salt, a nitro or a nitroso DOAI {22}
646  DF  .~.~ Benzene ring containing {5}
648.~.~.~ Two aryl rings or aryl ring systems bonded directly to the same acyclic carbon

DEFINITION

Classification: 514/648

Two aryl rings or aryl ring systems bonded directly to the same acyclic carbon:

(under subclass 646) Subject matter wherein two benzene rings or benzene containing polycyclos are bonded to the same acyclic carbon.

(1) Note. This subclass contains for example the following group: [figure] [caption], etc.