US PATENT SUBCLASS 423 / 493
.~.~ Iron group metal or copper (Fe, Co, Ni, or Cu)

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

462  DF  HALOGEN OR COMPOUND THEREOF {10}
491  DF  .~ Binary compound containing metal {6}
493.~.~ Iron group metal or copper (Fe, Co, Ni, or Cu)

DEFINITION

Classification: 423/493

(under subclass 491) Products or processes in which the metal is iron, cobalt, nickel or copper.