US PATENT SUBCLASS 514 / 91
.~.~.~ Hetero ring is five-membered

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}
75  DF  .~ Phosphorus containing other than solely as part of an inorganic ion in an addition salt DOAI {22}
79  DF  .~.~ Nitrogen containing hetero ring {6}
91.~.~.~ Hetero ring is five-membered {1}
92  DF  .~.~.~.~> Two or more hetero atoms in the five-membered ring {2}

DEFINITION

Classification: 514/91

Hetero ring is five-membered:

(under subclass 79) Subject matter in which the organo-phosphorus compound contains a heterocyclic moiety which has five members.