US PATENT SUBCLASS 75 / 590
.~.~.~.~.~ Vaporizing or condensing

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}
414  DF  .~.~ At 300 degrees C or greater (e.g., pyrometallurgy, etc.) {7}
585  DF  .~.~.~ Nonferrous {25}
589  DF  .~.~.~.~ Alkali metal, singly or in combination {2}
590.~.~.~.~.~ Vaporizing or condensing {1}
591  DF  .~.~.~.~.~.~> Cesium(Cs)

DEFINITION

Classification: 75/590

Vaporizing or condensing:

(under subclass 589) Process in which the Alkali metal is vaporized or condensed. The vaporization can occur during the reduction of an Alkali metal compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:

752, for a process in which a metal impurity is vaporized in a process including consolidation of a metalliferous material.