US PATENT SUBCLASS 75 / 523
.~.~.~.~.~.~ Melting solid Iron(Fe)

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}
433  DF  .~.~.~ Iron(Fe) {18}
507  DF  .~.~.~.~ Melting Iron(Fe) or treating molten Iron {12}
513  DF  .~.~.~.~.~ In reverberatory furnace (e.g., open-hearth, Siemens-Martin, puddling, etc.) {9}
523.~.~.~.~.~.~ Melting solid Iron(Fe)

DEFINITION

Classification: 75/523

Melting solid Iron (Fe):

(under subclass 513) Process wherein solid metal that contains over 50 percent by weight Iron (Fe) is melted in the reverberatory furnace.