US PATENT SUBCLASS 423 / 602
.~.~.~.~ Arsenate


Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

579  DF  OXYGEN OR COMPOUND THEREOF {4}
592  DF  .~ Metal containing {12}
593  DF  .~.~ Plural metals or metal and ammonium {6}
601  DF  .~.~.~ Arsenic (e.g., arsenite, etc.) {1}
602.~.~.~.~ Arsenate {1}
603  DF  .~.~.~.~.~> And lead containing


DEFINITION

Classification: 423/602

(under subclass 601) Products or processes in which the arsenic has a valence of +5 and is in the form of arsenate [i.e., metal arsenate (AS O3-), ortho arsenate (AsO43-) and pyroarsenate (AS2O74-)].