US PATENT SUBCLASS 514 / 229.2
.~.~.~ Three or more ring hetero atoms in the six-membered hetero ring

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}
228.8  DF  .~.~ Hetero ring is six-membered and includes at least nitrogen and oxygen as ring hetero atoms (e.g., monocyclic 1,2- and 1,3-oxazines, etc.) {4}
229.2.~.~.~ Three or more ring hetero atoms in the six-membered hetero ring

DEFINITION

Classification: 514/229.2

Three or more ring hetero atoms in the six-membered hetero ring:

(under subclass 228.8) Subject matter in which the six-membered hetero ring contains at least three ring hetero atoms.

(1) Note. An example of an active ingredient provided for herein is: [figure]