US PATENT SUBCLASS 987 / 210
.~.~ Two or more P atoms (9/165A6; 9/165B)

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}
209  DF  .~ Pentavalent P containing the structure P-(X-C) wherein a S, Se, or Te is directly bonded to the P atom and wherein X is chalcogen (X may qualify as the required S, Se, or Te atom) (9/16; 9/165; 9/165A1) {6}
210.~.~ Two or more P atoms (9/165A6; 9/165B)

DEFINITION

Classification: 987/210

Two or more P atoms (9/165A6; 9/165B):

(under subclass 209) Subject matter wherein the compound contains at least two phosphorus atoms.