US PATENT SUBCLASS 75 / 449
.~.~.~.~.~.~.~.~ Generated in situ

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}
443  DF  .~.~.~.~ Reducing in gaseous suspension {4}
444  DF  .~.~.~.~.~ Fluidized bed {4}
447  DF  .~.~.~.~.~.~ With solid in fluidized bed in addition to reducible Iron(Fe) compound {1}
448  DF  .~.~.~.~.~.~.~ Carbon(C) {1}
449.~.~.~.~.~.~.~.~ Generated in situ

DEFINITION

Classification: 75/449

Generated in situ:

(under subclass 448) Process wherein the Carbon (C) is not added in solid form, but solid Carbon is generated in the fluidized bed by chemical reaction.

(1) Note. The Carbon may be generated by cracking natural gas.

(2) Note. To be placed in this subclass there must be a specific claim that solid Carbon is generated in the fluidized bed. Cases of doubt will be resolved in favor of

placement in another subclass under 444.