US PATENT SUBCLASS 435 / 120
.~.~ Nitrogen or oxygen hetero atom and at least one other diverse hetero ring atom in the same ring

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41  DF  MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
117  DF  .~ Preparing heterocyclic carbon compound having only O, N, S, Se, or Te as ring hetero atoms {4}
120.~.~ Nitrogen or oxygen hetero atom and at least one other diverse hetero ring atom in the same ring

DEFINITION

Classification: 435/120

Nitrogen or oxygen hetero atom and at least one other diverse hetero ring atom in the same ring:

(under subclass 117) Subject matter wherein the product synthesized contains a hetero ring which contains at least two different hetero atoms, one of which is either nitrogen or oxygen.