US PATENT SUBCLASS 423 / 188
.~.~.~.~ Subjecting mixture to pressure, vacuum, or steam

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

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
179  DF  .~ Alkali metal (Li, Na, K, Rb, or Cs) {12}
184  DF  .~.~ Forming insoluble substance in liquid {8}
186  DF  .~.~.~ Carbonating {6}
188.~.~.~.~ Subjecting mixture to pressure, vacuum, or steam

DEFINITION

Classification: 423/188

(under subclass 186) Processes wherein a reaction takes place while the pressure on the mixture is either higher or lower than atmospheric, or wherein steam or water vapor is brought into contact with the mixture.

(1) Note. Pressure increase or decrease can be effected by any means; e.g., submerged blast of a gas into a liquid or a slurry, pumping of the liquid or slurry, increase or decrease in pressure of the gas space above a liquid surface, etc.