US PATENT SUBCLASS 210 / 643
.~.~ Utilizing liquid membrane (e.g., emulsion) in liquid/liquid solvent or colloidal extraction

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
634  DF  .~ Liquid/liquid solvent or colloidal extraction or diffusing or passing through septum selective as to material of a component of liquid; such diffusing or passing being effected by other than only an ion exchange or sorption process {11}
643.~.~ Utilizing liquid membrane (e.g., emulsion) in liquid/liquid solvent or colloidal extraction

DEFINITION

Classification: 210/643

Utilizing liquid membrane (e.g., emulsion) in liquid/liquid solvent or colloidal extraction:

(under subclass 634) Process in which a liquid serves as a selective septum through which a constituent diffuses, thereby being separated from the liquid being treated.

(1) Note. In many of the processes of this subclass the septum is a thin film, sometimes the dispersand of an emulsion and the diffused constituent collects in fine droplets of the dispersed phase.

(2) Note. A common use of this technique is to extract water from brine and such a process is classifiable in subclass 642.