US PATENT SUBCLASS 205 / 721
.~.~.~.~ Copper removed

Current as of: June, 1999
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205 /   HD   ELECTROLYSIS: PROCESSES, COMPOSITIONS USED THEREIN, AND METHODS OF PREPARING THE COMPOSITIONS

687  DF  ELECTROLYTIC MATERIAL TREATMENT (PRODUCT, PROCESS, AND ELECTROLYTE COMPOSITION) {8}
704  DF  .~ Metal or metal alloy {3}
705  DF  .~.~ Removing foreign material (e.g., cleaning, etc.) {7}
717  DF  .~.~.~ Entire identifiable elemental layer or portion removed (e.g., stripping, etc.) {4}
721.~.~.~.~ Copper removed

DEFINITION

Classification: 205/721

Copper removed:

(under subclass 717) Subject matter in which the elemental layer or portion removed contains copper (Cu).

SEE OR SEARCH THIS CLASS, SUBCLASS:

772, for electrolytic removal of copper from a nonmetallic inorganic liquid.