US PATENT SUBCLASS 987 / 222
.~.~ Containing the structure P-(O-ethylenic group) (9/143)

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}
222.~.~ Containing the structure P-(O-ethylenic group) (9/143)

DEFINITION

Classification: 987/222

Containing the structure P-(O-ethylenic group) (9/143):

(under subclass 217) Subject matter wherein the carbon atom which is bonded directly to the oxygen atom is a carbon atom of an ethylenic group or is indirectly bonded to a carbon atom of an ethylenic group and wherein the indirect bonding is not through the oxygen atom.