| 75 / | HD | SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES |
| 330 | DF | PROCESSES {9} |
| 10.1 | DF | .~ Electrothermic processes (e.g., microwave, induction, resistance, electric arc, plasma, etc.) {17} |
| 10.39 | DF | .~.~ Adding gaseous treating agent {4} |
| 10.44 | | .~.~.~ Carbon monoxide or Carbon dioxide |