US PATENT SUBCLASS 423 / 596
.~.~.~.~ And alkali metal, alkaline earth metal, or ammonium containing

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}
595  DF  .~.~.~ Chromium (e.g., chromate, etc.) {1}
596.~.~.~.~ And alkali metal, alkaline earth metal, or ammonium containing {1}
597  DF  .~.~.~.~.~> Dichromate

DEFINITION

Classification: 423/596

(under subclass 595) Products or processes wherein the compound also contains the ammonium (NH4+[end subscrpt]) radical or a metal of the alkali or a metal of the alkali or the alkaline earth groups.