US PATENT SUBCLASS 423 / 98
.~.~ 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}
89  DF  .~ Group IVA metal (Ge, Sn, or Pb) {5}
98.~.~ Leaching, washing, or dissolving

DEFINITION

Classification: 423/98

(under subclass 89) Processes which include leaching, washing or dissolving out a portion of the mixture; see Glossary.

SEE OR SEARCH THIS CLASS, SUBCLASS:

90, for a process of destining scrap metal by forming and dissolving a tin compound.