US PATENT SUBCLASS 514 / 520
.~.~.~ Benzene ring containing

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}
506  DF  .~ Ester DOAI {10}
519  DF  .~.~ Cyano or isocyano bonded directly to carbon {2}
520.~.~.~ Benzene ring containing {3}
521  DF  .~.~.~.~> C=O other than as ketone or aldehyde {1}
523  DF  .~.~.~.~> Additional nitrogen other than cyano {1}
525  DF  .~.~.~.~> Two or more of the cyano groups

DEFINITION

Classification: 514/520

Benzene ring containing:

(under subclass 303) Subject matter in which the cyano or isocyano containing compound also contains a benzene ring.

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