US PATENT SUBCLASS 75 / 408
.~.~.~ 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}
407  DF  .~.~ Filtering vaporous or liquid metal {5}
408.~.~.~ Alkali metal, singly or in combination

DEFINITION

Classification: 75/408

Alkali metal, singly or in combination:

(under subclass 407) Process in which the vaporous or liquid metal contains over 50 percent by weight of an Alkali metal

(i.e., Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs)), singly or in combination.