US PATENT SUBCLASS 562 / 486
.~.~.~.~.~ By crystallization

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
400  DF  .~ Carboxylic acids and salts thereof {14}
405  DF  .~.~ Aromatic {13}
480  DF  .~.~.~ Polycarboxylic acids or salts thereof {7}
485  DF  .~.~.~.~ Purification or recovery per se {2}
486.~.~.~.~.~ By crystallization

DEFINITION

Classification: 562/486

By crystallization:

(under subclass 485) Processes wherein the purification or recovery involves a significant crystallization step.