US PATENT SUBCLASS 987 / 136
.~.~ Trivalent P having the structure (C)2-P(XH or X-Salt) or pentavalent P having the structure (C)2-P(=X) (XH or X-Salt) where X is chalcogen (9/46)

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}
136.~.~ Trivalent P having the structure (C)2-P(XH or X-Salt) or pentavalent P having the structure (C)2-P(=X) (XH or X-Salt) where X is chalcogen (9/46)

DEFINITION

Classification: 987/136

Trivalent P having the structure (C)2-P(XH or X-Salt) or pentavalent P having the structure (C)2-P(=X)(XH or X-Salt where X is chalcogen (9/46):

(under subclass 116) Subject matter wherein the compound contains a trivalent P containing the structure (C)2-P-(XH or X-Salt), or pentavalent P containing the structure (C)2-P(=X)(XH or X-Salt), wherein at least one X is a chalcogen atom single bonded to the P atom.