US PATENT SUBCLASS 203 / 33
.~.~ Inorganic salt containing oxygen in the anion

Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

28  DF  WITH CHEMICAL REACTION {1}
29  DF  .~ Including step of adding catalyst or reacting material {7}
33.~.~ Inorganic salt containing oxygen in the anion

DEFINITION

Classification: 203/33

(under subclass 29) Processes, in which the reactive material

added is a metal or ammonium salt of an inorganic oxygen containing acid.

(1) Note. This subclass takes acid, neutral and basic salts of oxygen containing inorganic acids, e.g., NaHSO4, Na2SO4, CuCO3, Cu(OH)2.