US PATENT SUBCLASS 987 / 163
.~.~.~ Contains two or more P atoms (9/38B)

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}
116  DF  .~ Contains at least one (C)-P bond (9/28) {19}
146  DF  .~.~ Pentavalent P having the structure (C)-P(=X) (X) (X) where X is chalcogen (9/38) {8}
163.~.~.~ Contains two or more P atoms (9/38B) {1}
164  DF  .~.~.~.~> Two or more (C)-P(=) (X) (X) (X) or at least one (X) (X) (X=)-P-(C)-P-(=X) (X) (X) group (9/38A6; 9/30A6+J; 9/38A6+U)

DEFINITION

Classification: 987/163

Contains two or more P atoms (9/38B):

(under subclass 146) Subject matter wherein the P compound contains two or more P atoms.