US PATENT SUBCLASS 514 / 101
.~.~.~ Two or more oxygen in the 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}
75  DF  .~ Phosphorus containing other than solely as part of an inorganic ion in an addition salt DOAI {22}
99  DF  .~.~ Oxygen containing hetero ring {2}
101.~.~.~ Two or more oxygen in the hetero ring

DEFINITION

Classification: 514/101

Two or more oxygen in the hetero ring:

(under subclass 99) Subject matter in which the organo-phosphorus compound contains a heterocyclic ring which contains at least two oxygen atoms as ring members.