US PATENT SUBCLASS 210 / 721
.~.~ Including oxidation
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
.~.~ Including oxidation {1}
722
DF
.~.~.~
> Of iron or manganese material
DEFINITION
Classification: 210/721
Including oxidation:
(under subclass 702) Process which include a step of oxidizing a constituent of the liquid.