US PATENT SUBCLASS 419 / 18
.~.~.~.~ Tungsten carbide

Current as of: June, 1999
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419 /   HD   POWDER METALLURGY PROCESSES

1  DF  POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING {16}
10  DF  .~ Metal and nonmetal in final product {5}
14  DF  .~.~ Carbide containing {2}
17  DF  .~.~.~ Single carbide {1}
18.~.~.~.~ Tungsten carbide

DEFINITION

Classification: 419/18

Tungsten carbide:

(under subclass 17) Processes in which the carbide is a carbide of tungsten.