US PATENT SUBCLASS 204 / 564
.~.~.~.~ Using interrupted or pulsed direct current field

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}
559  DF  .~.~ Predominantly hydrocarbon {2}
563  DF  .~.~.~ Resolving emulsion or dispersion {3}
564.~.~.~.~ Using interrupted or pulsed direct current field

DEFINITION

Classification: 204/564

Using interrupted or pulsed direct current field:

(under subclass 563) Process in which the emulsion or dispersion is resolved using an electric field produced by a direct current which is periodically interrupted or pulsed.

(1) Note. An interrupted or pulsed direct current field is often used to reduce short circuiting by inhibiting the alignment of conducting constituents in the emulsion or dispersion between opposing electrodes.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

113+, for compositions for or subcombination compositions for or breaking of or inhibiting of colloid systems (e.g., foam breaking, emulsion breaking, dispersion inhibiting, suspension settling, gel breaking, smoke suppressing, coagulating, flocculating), when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art, when without using electrical or wave energy.