US PATENT SUBCLASS 423 / 593
.~.~ Plural metals or metal and ammonium

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.~.~ Plural metals or metal and ammonium {6}
594  DF  .~.~.~> Iron, cobalt, or nickel (e.g., ferrite, etc.)
595  DF  .~.~.~> Chromium (e.g., chromate, etc.) {1}
598  DF  .~.~.~> Titanium (e.g., titanate, etc.)
599  DF  .~.~.~> Manganese (e.g., manganate, etc.)
600  DF  .~.~.~> Aluminum (e.g., aluminate, etc.)
601  DF  .~.~.~> Arsenic (e.g., arsenite, etc.) {1}

DEFINITION

Classification: 423/593

(under subclass 592) Products or processes wherein the compound contains two or more metals or has a metal and the ammonium (NH4+) radical.