US PATENT SUBCLASS 987 / 219
.~.~ Containing the structure P-(O-carbocyclic ring) (9/145)

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}
217  DF  .~ P is trivalent and contains the structure P-(O-C) or P-(O-Z) where Z is an atom other than H (9/141; 9/141A1) {4}
219.~.~ Containing the structure P-(O-carbocyclic ring) (9/145) {2}
220  DF  .~.~.~> Ring is other than aryl (9/144)
221  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 (9/141A7)

DEFINITION

Classification: 987/219

Containing the structure P-(O-carbocyclic ring) (9/145):

(under subclass 217) 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.