US PATENT SUBCLASS 423 / 438
.~.~.~ From a carbonate

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

414  DF  CARBON OR COMPOUND THEREOF {3}
415.1  DF  .~ Oxygen containing {5}
437.1  DF  .~.~ Carbon dioxide or carbonic acid {2}
438.~.~.~ From a carbonate

DEFINITION

Classification: 423/438

(under subclass 437.1) Processes in which the product is made from a compound containing the carbonate (CO3[end subscrpt][supscrpt]2-[end supscrpt]) or the bicarbonate (HCO3-) radical.