US PATENT SUBCLASS 75 / 653
.~.~.~.~.~ Melting Copper(Cu) in shaft furnace

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}
638  DF  .~.~.~.~ Copper(Cu) {5}
653.~.~.~.~.~ Melting Copper(Cu) in shaft furnace

DEFINITION

Classification: 75/653

Melting Copper (Cu) in shaft furnace:

(under subclass 638) Process in which metal that contains over 50 percent by weight Copper (Cu) is melted in a shaft furnace.