US PATENT SUBCLASS 423 / 131
.~.~ Leaching, washing, or dissolving

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}
111  DF  .~ Group IIIA metal or beryllium (Al, Ga, In, Tl, or Be) {9}
131.~.~ Leaching, washing, or dissolving {1}
132  DF  .~.~.~> With acid

DEFINITION

Classification: 423/131

(under subclass 111) Processes which include leaching, washing, or dissolving out a portion of the mixture; see Glossary.