US PATENT SUBCLASS 423 / 150.2
.~.~.~ Spent catalyst

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}
138  DF  .~ Iron group metal (Fe, Co, or Ni) {7}
150.1  DF  .~.~ Leaching, washing, or dissolving {3}
150.2.~.~.~ Spent catalyst

DEFINITION

Classification: 423/150.2

Spent catalyst:

(under subclass 150.1) Processes that include recovering values from catalysts.

SEE OR SEARCH CLASS

502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making,

22+, for processes of treating in a liquid phase to regenerate or rehabilitate a catalyst.