US PATENT SUBCLASS 987 / 191
.~.~ P-(N=C=X) where X is chalcogen or P(-N-N) (9/22D; 9/22E)

Current as of: June, 1999
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987 /   HD   ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM

30  DF  PHOSPHORUS COMPOUNDS (9/02; 9/06) {15}
187  DF  .~ Phosphorus directly bonded to N, i.e., P(N) (9/22; 9/22A) {7}
191.~.~ P-(N=C=X) where X is chalcogen or P(-N-N) (9/22D; 9/22E)

DEFINITION

Classification: 987/191

P-(N=C=X) where X is chalcogen or P(-N-N) (9/22D; 9/22E):

(under subclass 187) Subject matter wherein the compound contains at least one P-(N=C=X) group where N is directly bonded to the P atom and X is chalcogen or at least one P-(N-N) group where an N of the N-N group is directly bonded to the P atom.