US PATENT SUBCLASS 423 / 547
.~.~.~.~ Employing sulfite or bisulfite as reactant

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

511  DF  SULFUR OR COMPOUND THEREOF {4}
512.1  DF  .~ Oxygen containing {11}
544  DF  .~.~ Sulfate {7}
545  DF  .~.~.~ Ammonium containing {4}
547.~.~.~.~ Employing sulfite or bisulfite as reactant

DEFINITION

Classification: 423/547

(under subclass 545) Processes wherein a sulfite (SO3[supscrpt]2-[end supscrpt]) or a bisulfite (HSO[supscrpt]-[end supscrpt]) is one of the reactants employed to form the compound.