US PATENT SUBCLASS 423 / 48
.~.~ Forming sulfide or matte

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}
48.~.~ Forming sulfide or matte

DEFINITION

Classification: 423/48

(under subclass 23) Processes which include forming a sulfide compound or a mixture of sulfides known as a matte.