US PATENT SUBCLASS 423 / 640
.~.~.~.~ By hydrating lime

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

579  DF  OXYGEN OR COMPOUND THEREOF {4}
592  DF  .~ Metal containing {12}
635  DF  .~.~ Alkaline earth metal (Mg, Ca, Sr, or Ba) {1}
636  DF  .~.~.~ Process of manufacturing {4}
640.~.~.~.~ By hydrating lime

DEFINITION

Classification: 423/640

(under subclass 636) Processes in which lime (CaO) is mixed with water to form the hydrate.