US PATENT SUBCLASS 75 / 548
.~.~.~.~.~.~ Gas contains gaseous Oxygen


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}
528  DF  .~.~.~.~.~ Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted Iron(Fe) or slag layer thereon {5}
548.~.~.~.~.~.~ Gas contains gaseous Oxygen {4}
549  DF  .~.~.~.~.~.~.~> With treatment of exhaust gas {1}
551  DF  .~.~.~.~.~.~.~> Injecting from above and below melt surface {1}
553  DF  .~.~.~.~.~.~.~> Injecting only from above melt surface {2}
556  DF  .~.~.~.~.~.~.~> Injecting only from below melt surface {1}


DEFINITION

Classification: 75/548

Gas contains gaseous Oxygen:

(under subclass 528) Process wherein Oxygen gas or an Oxygen gas containing composition (e.g., air, etc.) is the injected gas.