US PATENT SUBCLASS 423 / 297
.~.~ Refractory metal containing (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, or W)

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

276  DF  BORON OR COMPOUND THEREOF {5}
289  DF  .~ Binary compound (e.g., boride, etc.) {5}
297.~.~ Refractory metal containing (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, or W)

DEFINITION

Classification: 423/297

(under subclass 289) Products or processes wherein the other element is titanium, vanadium chromium, zirconium, niobium, molybdenum, hafnium, tantalum, or tungsten, commonly known as a refractory metal.