US PATENT SUBCLASS 423 / 553
.~.~.~.~ Dehydrating

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}
551  DF  .~.~.~ Alkali metal containing (Li, Na, K, Rb, or Cs) {2}
553.~.~.~.~ Dehydrating

DEFINITION

Classification: 423/553

(under subclass 551) Processes wherein at least some of the water is removed from a hydrated compound containing the alkali metal and the sulfate (SO4[end subscrpt][supscrpt]2-[end supscrpt]) radical.