US PATENT SUBCLASS 75 / 658
.~.~.~.~.~.~ Vaporizing or condensing

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
585  DF  .~.~.~ Nonferrous {25}
654  DF  .~.~.~.~ Zinc(Zn) {3}
656  DF  .~.~.~.~.~ Reduction {2}
658.~.~.~.~.~.~ Vaporizing or condensing {4}
659  DF  .~.~.~.~.~.~.~> Treating material in gaseous suspension
660  DF  .~.~.~.~.~.~.~> Treating material in blast furnace or cupola
661  DF  .~.~.~.~.~.~.~> Treating material in vertical retort
662  DF  .~.~.~.~.~.~.~> Treating material in rotary kiln

DEFINITION

Classification: 75/658

Vaporizing or condensing:

(under subclass 656) Process in which Zinc (Zn) is vaporized or condensed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

752, for a process in which a metal impurity is vaporized in a process including consolidation of a metalliferous material.