US PATENT SUBCLASS 423 / 89
.~ Group IVA metal (Ge, Sn, or Pb)

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}
89.~ Group IVA metal (Ge, Sn, or Pb) {5}
90  DF  .~.~> Detinning {1}
92  DF  .~.~> Forming insoluble substance in liquid {3}
96  DF  .~.~> Volatizing germanium or tin
97  DF  .~.~> Volatizing lead
98  DF  .~.~> Leaching, washing, or dissolving

DEFINITION

Classification: 423/89

(under subclass 1) Processes in which the compound comprises germanium, tin, or lead.

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 Ge, Sn, or Pb.