US PATENT SUBCLASS 423 / 43
.~.~.~ Specified pH

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}
42  DF  .~.~ Forming insoluble substance in liquid {1}
43.~.~.~ Specified pH

DEFINITION

Classification: 423/43

(under subclass 42) Processes in which specific alkalinity or acidity is employed during the process.