US PATENT SUBCLASS 23 / 297
.~.~.~ With extraction

Current as of: June, 1999
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23 /   HD   CHEMISTRY: PHYSICAL PROCESSES

293 R  DF  PHYSICAL PROCESSES {7}
295 R  DF  .~ Crystallization {8}
296  DF  .~.~ Selective {2}
297.~.~.~ With extraction

DEFINITION

Classification: 23/297

(under subclass 296) Processes carried out in solution, in combination with a step of physical extraction or dissolving.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds, appropriate subclasses, for extracting leaching or dissolving, per se.