US PATENT SUBCLASS 558 / 147
.~.~.~.~ Of compounds having plural phosphori


Current as of: June, 1999
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558 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
70  DF  .~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18}
87  DF  .~.~ Processes {19}
146  DF  .~.~.~ Purification or recovery {4}
147.~.~.~.~ Of compounds having plural phosphori


DEFINITION

Classification: 558/147

(under subclass 146) Process in which there are two or more phosphori in the compounds purified or recovered.