US PATENT SUBCLASS 987 / 217
.~ 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)

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.~ 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}
218  DF  .~.~> Containing the structure P-(O-*acyl), P-(O-*Z) wherein Z is an atom, other than C, H, or a salt former, or P-(O-*cyano) where * indicates a direct bond to the adjacent oxygen atom (9/141A9; 9/09A9+Q; 9/09A9+U)
219  DF  .~.~> Containing the structure P-(O-carbocyclic ring) (9/145) {2}
222  DF  .~.~> Containing the structure P-(O-ethylenic group) (9/143)
223  DF  .~.~> Containing the structure P-(O-unsubstituted alkyl) wherein all of th O atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing only carbon and hydrogen atoms (9/142)

DEFINITION

Classification: 987/217

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):

(under subclass 30) Subject matter wherein the P is trivalent and contains the structure P-(O-C) or P-(O-Z) where P is bonded directly to the oxygen atom and a carbon atom is bonded directly to the oxygen atom or an atom other than hydrogen is directly bonded to the oxygen atom.