US PATENT SUBCLASS 514 / 212
.~.~ Hetero ring is seven-membered consisting of one nitrogen and six carbon atoms

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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
183  DF  .~ Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., O,S,Se or Te) or nitrogen as the only ring hetero atoms DOAI {16}
212.~.~ Hetero ring is seven-membered consisting of one nitrogen and six carbon atoms {1}
213  DF  .~.~.~> Polycyclo ring system having the seven-membered hetero ring as one of the cyclos {4}

DEFINITION

Classification: 514/212

Hetero ring is seven-membered consisting of one nitrogen and six carbon atoms:

(under subclass 183) Subject matter which contains a seven-membered heterocyclic ring consisting of six carbon atoms and one nitrogen atom.

SEE OR SEARCH CLASS

540, Organic Compounds,

484+, for a seven-membered ring compound containing a ring nitrogen.