US PATENT SUBCLASS 423 / 44
.~.~ Volatizing copper, silver, or gold

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}
23  DF  .~ Group IB metal (Cu, Ag, or Au) {10}
44.~.~ Volatizing copper, silver, or gold

DEFINITION

Classification: 423/44

(under subclass 23) Processes including the step of causing copper, silver or gold in either the elemental or compound form to pass into the form of a gas or a vapor; see Glossary.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures,

111+, for a process of obtaining a pure elemental metal which may include a step of volatizing a substance.