US PATENT SUBCLASS 75 / 239
.~.~.~.~ Carbide only of Vanadium(V), Niobium(Nb) or Columbium(Cb), or Tantalum(Ta)

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

300  DF  COMPOSITIONS {5}
228  DF  .~ Consolidated metal powder compositions {4}
230  DF  .~.~ With nonmetal constituent - Silicon(Si) considered a metal (e.g., cermet, etc.) {5}
236  DF  .~.~.~ Carbide containing {4}
239.~.~.~.~ Carbide only of Vanadium(V), Niobium(Nb) or Columbium(Cb), or Tantalum(Ta)

DEFINITION

Classification: 75/239

Carbide only of Vanadium (V), Niobium (Nb) or Columbium (Cb), or Tantalum (Ta):

(under subclass 236) Subject matter restricted to the carbides of vanadium, niobium (columbium) and/or tantalum.

SEE OR SEARCH THIS CLASS, SUBCLASS:

236, for similar compositions in which the carbide of a metal other than a Group VB metal may be used alternatively to the carbide of a Group VB metal.

241, for a composition in which a Group VB metal carbide is used in addition to the carbide of a metal other than a Group VB metal.