(under subclass 687) Subject matter in which a metal or a metal compound is removed from the material under treatment, usually either by deposition of free metal or metal alloy or by precipitation of an insoluble metal compound or complex.
SEE OR SEARCH THIS CLASS, SUBCLASS:
693, for electrolytic cleaning or refining of fibrous organic material.
702, for electrolytic removal of a metal or metal compound from organic material.
705+, for electrolytic removal of foreign material from a metal or metal alloy.
750, for electrolytic removal of a metal or metal compound from water, sewage, or other waste water using a membrane.
