US PATENT SUBCLASS 987 / 115
.~.~ Contains the structure "ethylenic group"-P where "--" indicates that a carbon of the ethylenic group may or may not be bonded directly to the P atom (9/54A2)

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}
110  DF  .~ Quaternary phosphonium compounds (C)a-P-(H)b wherein a+b=4, a=1-4, b=1-3, (9/54; 9/54A1; 9/54A1+W; 9/54A1+W2) {5}
115.~.~ Contains the structure "ethylenic group"-P where "--" indicates that a carbon of the ethylenic group may or may not be bonded directly to the P atom (9/54A2)

DEFINITION

Classification: 987/115

Contains the structure "ethylenic group"-P where "- -" indicates that a carbon of the ethylenic group may or may not be bonded directly to the P atom (9/54A2):

(under subclass 110) Subject matter wherein at least one of the C atoms of an ethylenic group or is bonded indirectly or indirectly to a P atom.

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

(1) Note. This subclass allows for those phosphorus compounds which may contain a single atom of phosphorus bonded directly to carbon and to another element distinct from carbon. It also provides for phosphorus compounds wherein plural phosphorus atoms are present and one of the phosphorus atoms present is bonded directly to carbon while a different phosphorus atom is bonded to a non-carbon atom.