US PATENT SUBCLASS 423 / 494
.~.~ Group IVA metal or copper (Ge, Sn, or Pb)

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}
494.~.~ Group IVA metal or copper (Ge, Sn, or Pb)

DEFINITION

Classification: 423/494

(under subclass 491) Products or processes in which the metal is either germanium, tin or lead.

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90, for a process of forming salts of tin wherein the intent is to recover a tin compound by destining a mixture thereof.