US PATENT SUBCLASS 987 / 124
.~.~.~ Compound contains a ring composed solely of carbon atoms or contains an ethylenic group (9/53A3; 9/53A4)

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}
121  DF  .~.~ Pentavalent P compound having the structure (C)-P(=X)(C or H)(C or H) where X is chalcogen (9/53) {4}
124.~.~.~ Compound contains a ring composed solely of carbon atoms or contains an ethylenic group (9/53A3; 9/53A4)

DEFINITION

Classification: 987/124

Compound contains a ring composed solely of carbon atoms or contains an ethylenic group (9/53A3; 9/53A4):

(under subclass 121) Subject matter wherein the P compound contains at least one ring containing only carbon atoms or a double or triple bond between adjacent carbon atoms.