US PATENT SUBCLASS 423 / 99
.~ Group IIB metal (Zn, Cd, or Hg)

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

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
99.~ Group IIB metal (Zn, Cd, or Hg) {5}
100  DF  .~.~> Ion exchanging or magnetic separating
101  DF  .~.~> Forming insoluble substance in liquid {5}
107  DF  .~.~> Volatizing zinc, cadmium, or mercury {1}
109  DF  .~.~> Leaching, washing, or dissolving
110  DF  .~.~> Desulfurizing

DEFINITION

Classification: 423/99

(under subclass 1) Processes wherein the compound comprises zinc, cadmium or mercury.

SEE OR SEARCH CLASS

588, Hazardous or Toxic Waste Destruction or Containment, appropriate subclasses for the destruction or containment of hazardous or toxic waste containing Zn, Cd, or Hg.