US PATENT SUBCLASS 75 / 406
.~.~ Adsorbing impurity from vaporous or liquid metal

Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

330  DF  PROCESSES {9}
392  DF  .~ Producing or treating free metal {10}
406.~.~ Adsorbing impurity from vaporous or liquid metal

DEFINITION

Classification: 75/406

Adsorbing impurity from vaporous or liquid metal:

(under subclass 392) Process in which a contaminant is removed from vaporous or liquid metal by contacting the metal with a material that has an affinity for the contaminant such that the contaminant adheres to the reactive surfaces of the material.