US PATENT SUBCLASS 204 / 571
.~.~ Removing solids

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}
571.~.~ Removing solids {1}
572  DF  .~.~.~> Using cohesive filter or solid packing

DEFINITION

Classification: 204/571

Removing solids:

(under subclass 554) Process in which solid material is removed from the liquid under treatment.

(1) Note. Very small, single-cell, biological entities (e.g., bacteria, etc.) are not considered to be solid material for the purposes of this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

560+, for electrical separation or purification to remove solids from liquid hydrocarbons.