US PATENT SUBCLASS 210 / 654
.~.~.~.~.~.~ Synthetic resin

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}
649  DF  .~.~ Diffusing or passing through septum selective as to material of a component of liquid {1}
650  DF  .~.~.~ Filtering through membrane (e.g., ultrafiltration) {2}
652  DF  .~.~.~.~ Hyperfiltration (e.g., reverse osmosis, etc.) {1}
653  DF  .~.~.~.~.~ Utilizing specified membrane material {2}
654.~.~.~.~.~.~ Synthetic resin

DEFINITION

Classification: 210/654

Synthetic resin:

(under subclass 653) Process in which the membrane is constructed of a manufactured polymeric material exhibiting properties similar to those of a natural resin (e.g., film forming).

(1) Note. Synthetic resins, per se, are classified in Class 260, Chemistry of Carbon Compounds, subclasses 201+ (including the 520 series of classes).