US PATENT SUBCLASS 210 / 685
.~.~.~.~ Including cation

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}
681  DF  .~.~ Removing ions {4}
683  DF  .~.~.~ Anions {2}
685.~.~.~.~ Including cation {1}
686  DF  .~.~.~.~.~> Utilizing mixed bed or amphoteric material

DEFINITION

Classification: 210/685

Including cation:

(under subclass 683) Process including removing a positively charged constituent from the liquid being treated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

681, 687, or 688, for a process involving removal of cations.