US PATENT SUBCLASS 514 / 332
.~.~.~ Plural six-membered hetero rings consisting of one nitrogen and five carbon atoms

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}
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}
277  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbon atoms {11}
332.~.~.~ Plural six-membered hetero rings consisting of one nitrogen and five carbon atoms {3}
333  DF  .~.~.~.~> Additional hetero ring other than the six-membered hetero rings
334  DF  .~.~.~.~> The six-membered hetero rings are bonded directly to each other
335  DF  .~.~.~.~> Chalcogen bonded directly to a ring carbon of the six-membered hetero ring

DEFINITION

Classification: 514/332

Plural six-membered hetero rings consisting of one nitrogen and five carbon atoms:

(under subclass 277) Subject matter which contains at least two of the six-membered hetero rings, each consisting of one nitrogen and five carbons and having at least one double bond between ring members, i.e., pyridine or partially hydrogenated pyridine rings.