| 75 / | HD | SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES |
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| 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} |
| 611 | DF | .~.~.~.~ Refractory metal, singly or in combination {3} |
| 612 | DF | .~.~.~.~.~ Titanium(Ti), Zirconium(Zr), or Hafnium(Hf), singly or in combination {2} |
| 613 |  | .~.~.~.~.~.~ Reduction {2} |
| 614 | DF | .~.~.~.~.~.~.~> Using free metal or alloy reductant {1} |
| 620 | DF | .~.~.~.~.~.~.~> Of Titanium(Ti), Zirconium(Zr), or Hafnium(Hf) compound containing Halogen |