US PATENT SUBCLASS 75 / 530
.~.~.~.~.~.~.~ And hydrocarbon in surrounding relationship to gaseous Oxygen (e.g., hydrocarbon in outer concentric tube, etc.)

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}
529  DF  .~.~.~.~.~.~ With hydrocarbon liquid or gas present {1}
530.~.~.~.~.~.~.~ And hydrocarbon in surrounding relationship to gaseous Oxygen (e.g., hydrocarbon in outer concentric tube, etc.)

DEFINITION

Classification: 75/530

And hydrocarbon in surrounding relationship to gaseous Oxygen (e.g., hydrocarbon in outer concentric tube, etc.):

(under subclass 529) Process wherein a liquid or gaseous hydrocarbon is in a surrounding relationship to oxygen gas or an oxygen gas containing gas composition (e.g., hydrocarbon in outer concentric tube, etc.).

(1) Note. Hydrocarbon used as a shielding or protective gas surrounding Oxygen gas or air is included in this subclass.