US PATENT SUBCLASS 987 / 46
.~.~.~ Contains P(O) group as ring atoms and wherein the P atom is directly bonded to extracyclic S (9/6571A; 9/6571A1)

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}
33  DF  .~ Compound contains a ring which is devoid of a metal atom and contains at least one P atom as ring member (9/6564; 9/6564V; 9/6568; 9/6568B; 9/6568C; 9/6568D; 9/6568E; 9/6568F) {3}
37  DF  .~.~ Ring contains O and P only, or may include in addition to the required O and P, only C (9/6571) {5}
46.~.~.~ Contains P(O) group as ring atoms and wherein the P atom is directly bonded to extracyclic S (9/6571A; 9/6571A1) {2}
47  DF  .~.~.~.~> Two or more rings contain at least one P-O bond and wherein at least two P atoms in the two rings are bonded to S (includes spiro) (9/6571A6)
48  DF  .~.~.~.~> P(O) containing ring is part of a condensed or bridged ring carbocyclic system (9/6571A4)

DEFINITION

Classification: 987/46

Contains P(O) group as ring atoms and wherein the P atom is directly bonded to extracyclic S (9/6571A; 9/6571A1):

(under subclass 37) Subject matter wherein the ring phosphorus atom is bonded directly to a sulfur atom, the sulfur being extracyclic to the phosphorus containing ring.