US PATENT SUBCLASS 987 / 178
.~.~.~ Contains the structure "ethylenic group"-P(=X) (C) (X-C) where "--" indicates that a carbon atom of the ethylenic group may or may not be bonded directly to the P atom (9/32A2)

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}
116  DF  .~ Contains at least one (C)-P bond (9/28) {19}
171  DF  .~.~ Pentavalent P having the structure (C)2-P(=X) (X-C) where X is chalcogen (9/32) {9}
178.~.~.~ Contains the structure "ethylenic group"-P(=X) (C) (X-C) where "--" indicates that a carbon atom of the ethylenic group may or may not be bonded directly to the P atom (9/32A2)

DEFINITION

Classification: 987/178

Contains the structure "ethylenic group" -P(=X)(C)(X-C) where "--" indicates that a carbon atom of the ethylenic group may or may not be bonded directly to the P atom (9/32A2):

(under subclass 171) Subject matter wherein one of the C atoms bonded directly to the P atom is part of an ethylenic group or is bonded directly or indirectly to an ethylenic group and wherein the indirect linkage to the C atom is not through the P atom.

(1) Note. An ethylenic group is defined as a double or triple bond between adjacent acyclic carbon atoms.