US PATENT SUBCLASS 514 / 137
.~.~ Nitrogen bonded directly to phosphorus

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

DEFINITION

Classification: 514/137

Nitrogen bonded directly to phosphorus:

(under subclass 75) Subject matter wherein the organo-phosphorus compound has at least one phosphorus to nitrogen bond.

SEE OR SEARCH THIS CLASS, SUBCLASS:

118, when another nitrogen atom other than nitro or nitroso is present in the molecule which nitrogen is not directly bonded to phosphorus.