US PATENT SUBCLASS 205 / 679
.~.~.~ More than 20 weight percent chromium compound

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}
674  DF  .~ Electrolyte composition or defined electrolyte {6}
675  DF  .~.~ Less than 50 weight percent water {3}
679.~.~.~ More than 20 weight percent chromium compound

DEFINITION

Classification: 205/679

More than 20 weight percent chromium compound:

(under subclass 675) Subject matter in which more than 20 percent by weight of the electrolyte is made of one or more chromium (Cr) compounds.

SEE OR SEARCH THIS CLASS, SUBCLASS:

681, for an aqueous-base electrolyte containing chromium.