US PATENT SUBCLASS 514 / 477
.~.~ N-C(=X)-X-N 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}
476  DF  .~ N-C(=X)X containing (X is chalcogen) DOAI {3}
477.~.~ N-C(=X)-X-N containing

DEFINITION

Classification: 514/477

N-C (=X)-X-N containing:

(under subclass 476) Subject matter wherein the active ingredient contains the grouping NXN wherein X is chalcogen, e.g., R2-NS-NH2[end subscrpt], etc.