US PATENT SUBCLASS 210 / 673
.~.~.~ Utilizing gas, water, or chemical oxidizing or reducing agent

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
660  DF  .~ Ion exchange or selective sorption {8}
670  DF  .~.~ Including rehabilitating or regenerating exchange material or sorbent {7}
673.~.~.~ Utilizing gas, water, or chemical oxidizing or reducing agent

DEFINITION

Classification: 210/673

Utilizing gas, water or chemical oxidizing or reducing agent:

(under subclass 670) Process wherein the separatory material is restored to use by contact by a gas (including drying) except to merely loosen a bed, or by water, or by a chemical agent which oxidizes or reduces the sorbed constituent.

(1) Note. Mere backwashing with water, without the water causing a regeneration of the separatory material, is not intended to be included in this subclass. Elution by a solvent, except water, is not proper for this subclass, see subclass 674.

SEE OR SEARCH THIS CLASS, SUBCLASS:

668, for destruction or inhibition of a dispersed constituent.

764, for a chemical treatment involving destruction of micro-organisms.

SEE OR SEARCH CLASS

208, Mineral Oils: Processes and Products, 310, for distillation of mineral oils from adsorbents.