US PATENT SUBCLASS 514 / 115
.~.~.~ N-C(=X)-N containing (X is chalcogen)

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}
114  DF  .~.~ Nitrogen, other than nitro or nitroso, bonded indirectly to phosphorus {4}
115.~.~.~ N-C(=X)-N containing (X is chalcogen)

DEFINITION

Classification: 514/115

N-C(=X)-N containing (S is chalcogen):

(under subclass 114) Subject matter in which the organo-phosphorus compound contains the radical NN wherein X is chalcogen.