US PATENT SUBCLASS 987 / 112
.~.~ Contains two or more phosphonium P atoms (9/54A6)

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}
110  DF  .~ Quaternary phosphonium compounds (C)a-P-(H)b wherein a+b=4, a=1-4, b=1-3, (9/54; 9/54A1; 9/54A1+W; 9/54A1+W2) {5}
112.~.~ Contains two or more phosphonium P atoms (9/54A6)

DEFINITION

Classification: 987/112

Contains two or more phosphonium P atoms (9/54A6):

(under subclass 110) Subject matter wherein the P compound contains two or more phosphonium P atoms.