US PATENT SUBCLASS 514 / 138
.~.~.~ N-P-N or N-N-P containing

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}
137  DF  .~.~ Nitrogen bonded directly to phosphorus {1}
138.~.~.~ N-P-N or N-N-P containing

DEFINITION

Classification: 514/138

N-P-N or N-N-P containing:

(under subclass 137) Subject matter wherein the organo-phosphorus compound has a N-P-N or N-N-P chain therein.