US PATENT SUBCLASS 987 / 230
.~.~.~ Contains the structure P-(O)-[C]n-aryl wherein n is at least one and the aryl ring is bonded to the O atom through a chain of only carbon atoms (9/09A7)

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}
224  DF  .~ P is pentavalent and contains the structure P-(O-C) or P-(O-Z) where Z indicates an atom other than H (9/09; 9/09A1) {6}
228  DF  .~.~ Containing the structure P-(O-carbocyclic ring) (9/12) {2}
230.~.~.~ Contains the structure P-(O)-[C]n-aryl wherein n is at least one and the aryl ring is bonded to the O atom through a chain of only carbon atoms (9/09A7)

DEFINITION

Classification: 987/230

Contains the structure P-(O)-[C]n-aryl wherein n is at least one and the aryl ring is bonded to the O atom through a chain of only carbon atoms (9/09A7):

(under subclass 228) Subject matter wherein an aryl group is bonded to the oxygen atom indirectly and the bonding is through a single acyclic carbon atom or through a chain solely composed of acyclic carbon atoms.