US PATENT SUBCLASS 514 / 431
.~.~.~ The hetero ring has at least seven members


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}
430  DF  .~.~ Sulfur containing hetero ring {3}
431.~.~.~ The hetero ring has at least seven members


DEFINITION

Classification: 514/431

The hetero ring has at least seven members:

(under subclass 430) Subject matter wherein the hetero ring has at least seven members.