US PATENT SUBCLASS 75 / 749
.~.~ With physical separation or classification of solids

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}
746  DF  .~ Consolidating metalliferous material (e.g., ore, tailings, flue dust, fluxes, etc.) by agglomerating, compacting, or heat treating; preparatory process therefor; or treating consolidated material therefrom {5}
749.~.~ With physical separation or classification of solids {1}
750  DF  .~.~.~> By sifting

DEFINITION

Classification: 75/749

With physical separation or classification of solids:

(under subclass 746) Combined process that involves separating solid materials and assorting or segregating them into grades or classes according to physical characteristics (e.g., flotation, screening, flocculation, etc.) of solids.

SEE OR SEARCH THIS CLASS, SUBCLASS:

746, for the line between Class 209 and Class 75 and for combined operations acceptable to Class 75.