US PATENT SUBCLASS 75 / 589
.~.~.~.~ Alkali metal, singly or in combination

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.~.~.~.~ Alkali metal, singly or in combination {2}
590  DF  .~.~.~.~.~> Vaporizing or condensing {1}
592  DF  .~.~.~.~.~> Precipitating impurities from molten Alkali metal

DEFINITION

Classification: 75/589

Alkali metal, singly or in combination:

(under subclass 585) Process in which an Alkali metal (i.e., Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs)) is produced or a metal that contains over 50 percent by weight Alkali metal, singly or in combination, is treated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

745, for a process of producing an Alkali metal or treating a metal that contains over 50 percent by weight Alkali metal, singly or in combination, below 300 degrees C.