US PATENT SUBCLASS 204 / 558
.~.~ With simultaneous use of liquid-liquid extraction solvent

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

*  DD  PROCESSES AND PRODUCTS {7}
554  DF  .~ Electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) {7}
558.~.~ With simultaneous use of liquid-liquid extraction solvent

DEFINITION

Classification: 204/558

With simultaneous use of liquid-liquid extraction solvent:

(under subclass 554) Process characterized by the presence of a liquid-liquid solvent capable of removing a liquid constituent from a liquid mixture by preferential dissolution or miscibility of the liquid constituent into the liquid-liquid solvent.

(1) Note. This subclass is intended to include processes using such a liquid-liquid solvent for any purpose, even if there is no disclosure of actual transfer of a liquid constituent from the liquid mixture into the liquid-liquid solvent.

(2) Note. The liquid-liquid solvent extraction and electrical separation or purification must occur simultaneously. See the search class note to Class 210 below.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

634+, for liquid-liquid solvent extraction, per se, or combined with a separate step of electrical treatment.