US PATENT SUBCLASS 423 / 177
.~.~.~.~ With agitating or at specified temperature

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}
155  DF  .~ Alkaline earth metal (Mg, Ca, Sr, or Ba) {11}
173  DF  .~.~ Treating impure carbonate (e.g., oyster shells, etc.) {2}
175  DF  .~.~.~ Calcining {2}
177.~.~.~.~ With agitating or at specified temperature

DEFINITION

Classification: 423/177

(under subclass 175) Processes including the step of agitating or vibrating the mixture while it is being heated or in which a particular heating temperature or range thereof is specified.