US PATENT SUBCLASS 423 / 608
.~.~ Group IVB metal (Ti, Zr, or Hf)

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

579  DF  OXYGEN OR COMPOUND THEREOF {4}
592  DF  .~ Metal containing {12}
608.~.~ Group IVB metal (Ti, Zr, or Hf) {2}
609  DF  .~.~.~> Titanium monoxide or sesquioxide
610  DF  .~.~.~> Titanium dioxide {2}

DEFINITION

Classification: 423/608

(under subclass 592) Products or processes wherein the metal in titanium, zirconium or hafnium (Group IV B).