US PATENT SUBCLASS 210 / 757
.~.~ By chemical reduction

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

600  DF  PROCESSES {14}
749  DF  .~ Chemical treatment {8}
757.~.~ By chemical reduction

DEFINITION

Classification: 210/757

By chemical reduction:

(under subclass 749) Process wherein the positive valence (oxidation state) of a constituent in the liquid is decreased.

SEE OR SEARCH THIS CLASS, SUBCLASS:

719, for a precipitation process involving a chemical reduction.