US PATENT SUBCLASS 205 / 660
.~ Preliminary cleaning or shaping of workpiece

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

640  DF  ELECTROLYTIC EROSION OF A WORKPIECE FOR SHAPE OR SURFACE CHANGE (E.G., ETCHING, POLISHING, ETC.) (PROCESS AND ELECTROLYTE COMPOSITION) {19}
660.~ Preliminary cleaning or shaping of workpiece {1}
661  DF  .~.~> Nonelectrolytic (e.g., mechanical grinding, milling, machining, etc.)

DEFINITION

Classification: 205/660

Preliminary cleaning or shaping of workpiece:

(under subclass 640) Process which includes a step of removing foreign matter from the workpiece or altering the form of the workpiece before at least one step of electrolytic erosion on the same workpiece.

(1) Note. Plural steps of electrolytic erosion for shape or surface change of the same workpiece are included in this subclass and the subclasses indented hereunder.

(2) Note. Mere coating of the workpiece is not considered shaping.