US PATENT SUBCLASS 423 / 195
.~.~.~ 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}
195.~.~.~ Subjecting mixture to pressure, vacuum, or steam

DEFINITION

Classification: 423/195

(under subclass 184) 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 in contact with the mixture.

(1) Note. Pressure increase or decrease can be 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.

SEE OR SEARCH THIS CLASS, SUBCLASS:

188, above for similar processes which include carbonation.