US PATENT SUBCLASS 987 / 32
.~ Compound contains at least one atom of silicon or boron (9/02G)

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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}
32.~ Compound contains at least one atom of silicon or boron (9/02G)

DEFINITION

Classification: 987/32

Compound contains at least one atom of silicon or boron (9/02G):

(under subclass 30) Subject matter wherein the phosphorus containing compound contains at least one atom of silicon or boron.