US PATENT SUBCLASS 423 / 437.1
.~.~ Carbon dioxide or carbonic acid

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.~.~ Carbon dioxide or carbonic acid {2}
438  DF  .~.~.~> From a carbonate
437.2  DF  .~.~.~> From carbon monoxide

DEFINITION

Classification: 423/437.1

Carbon dioxide or carbonic acid:

(under subclass 415.1) Products or processes wherein the product is carbon dioxide (CO2) or a solution thereof in water.