US PATENT SUBCLASS 210 / 722
.~.~.~ Of iron or manganese material


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

600  DF  PROCESSES {14}
702  DF  .~ Making an insoluble substance or accreting suspended constituents {14}
721  DF  .~.~ Including oxidation {1}
722.~.~.~ Of iron or manganese material


DEFINITION

Classification: 210/722

Of iron or manganese material:

(under subclass 721) Process wherein the constituent being oxidized is iron or manganese.