US PATENT SUBCLASS 987 / 228
.~.~ Containing the structure P-(O-carbocyclic ring) (9/12)

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.~.~ Containing the structure P-(O-carbocyclic ring) (9/12) {2}
229  DF  .~.~.~> Ring is other than aryl (9/117)
230  DF  .~.~.~> 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: 987/228

Containing the structure P-(O-carbocyclic ring) (9/12):

(under subclass 224) Subject matter wherein the C atom which is bonded directly to the oxygen atom is either a ring atom of a carbocyclic ring or is indirectly bonded to a ring atom of a carbocyclic group and wherein the indirect bonding is not through the oxygen atom.