US PATENT SUBCLASS 423 / 97
.~.~ Volatizing lead

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  DF  .~ Group IVA metal (Ge, Sn, or Pb) {5}
97.~.~ Volatizing lead

DEFINITION

Classification: 423/97

(under subclass 89) Processes including the step of causing lead in elemental or compound form to be changed into a gas or vapor; see Glossary.