US PATENT SUBCLASS 423 / 545
.~.~.~ Ammonium containing

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

511  DF  SULFUR OR COMPOUND THEREOF {4}
512.1  DF  .~ Oxygen containing {11}
544  DF  .~.~ Sulfate {7}
545.~.~.~ Ammonium containing {4}
546  DF  .~.~.~.~> Utilizing thiocyanate as reactant
547  DF  .~.~.~.~> Employing sulfite or bisulfite as reactant
548  DF  .~.~.~.~> Using metal sulfate as reactant
549  DF  .~.~.~.~> Employing sulfuric acid as reactant {1}

DEFINITION

Classification: 423/545

(under subclass 544) Products or processes wherein the compound contains the ammonium ion (NH4+).

SEE OR SEARCH THIS CLASS, SUBCLASS:

517, for a compound, or process of making the compound, which contains a metal in addition to the ammonium (NH4+) radical and the sulfate (SO4[supscrpt]2-[end supscrpt]) radical.