US PATENT SUBCLASS 987 / 133
.~.~.~ Contains ring solely composed of carbon atoms or at least one ethylenic group (9/50A2; 9/50A3; 9/50A4)

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}
129  DF  .~.~ Trivalent P compound having the structure (C)-P-(C or H)(C or H) (9/50) {5}
133.~.~.~ Contains ring solely composed of carbon atoms or at least one ethylenic group (9/50A2; 9/50A3; 9/50A4)

DEFINITION

Classification: 987/133

Contains ring solely composed of carbon atoms or at least one ethylenic group (9/50A2; 9/50A3; 9/50A4):

(under subclass 129) Subject matter wherein the P compound contains at least one ring containing only carbon atoms or an acyclic group containing a double or triple bond between adjacent carbon atoms.