US PATENT SUBCLASS 205 / 705
.~.~ Removing foreign material (e.g., cleaning, etc.)

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.~.~ Removing foreign material (e.g., cleaning, etc.) {7}
706  DF  .~.~.~> Internal battery action {1}
709  DF  .~.~.~> With solid-workpiece moving contact (e.g., brushing, etc.)
710  DF  .~.~.~> With changing current {1}
712  DF  .~.~.~> Nonelemental material from ferrous metal {2}
717  DF  .~.~.~> Entire identifiable elemental layer or portion removed (e.g., stripping, etc.) {4}
722  DF  .~.~.~> Using electrolyte containing surface active agent (e.g., foaming or wetting agent, etc.)
723  DF  .~.~.~> Using acidic electrolyte

DEFINITION

Classification: 205/705

Removing foreign material (e.g., cleaning, etc.):

(under subclass 704) Subject matter in which foreign or undesired material having a different chemical composition from that of the metal or metal alloy is removed therefrom (e.g., cleaning, etc.).

(1) Note. Electrolytic removal of metal followed by a broadly recited heat treatment are included in this subclass and the subclasses indented hereunder.

(2) Note. Processes which employ a Class 205 electrolytic cleaning step in combination with a Class 134 cleaning step are properly classified herein and cross-referenced to Class 134 when appropriate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

693, for electrolytic cleaning or refining of fibrous organic material, includingremoval of an undesirable metal or metal compound.

702, for electrolytic removal of a metal or metal compound from nonfibrous organic material.

750, for electrolytic removal of a metal or metal compound from water, sewage, or other waste water using a membrane.

771+, for electrolytic removal of a metal or metal compound from nonmetallic inorganic material. SEE OR SEARCH CLASS

134, Cleaning and Liquid Contact With Solids, for cleaning and analogous processes which are physical or chemical in nature, but which do not use an electric current.