US PATENT SUBCLASS 568 / 854
.~.~.~.~.~.~ Purification or recovery

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
700  DF  .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
840  DF  .~.~.~ Acyclic {16}
852  DF  .~.~.~.~ Polyhydroxy {9}
853  DF  .~.~.~.~.~ Polyalkylol substituted alkane (e.g., pentaerythritol, trimethylolethane, ect.) {1}
854.~.~.~.~.~.~ Purification or recovery

DEFINITION

Classification: 568/854

Purification or recovery:

(under subclass 853) Processes which include separating the compounds from impurities or from the reaction mixture.