US PATENT SUBCLASS 423 / 442
.~.~.~ By reacting carbon and inorganic calcium containing compound

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

414  DF  CARBON OR COMPOUND THEREOF {3}
439  DF  .~ Binary compound (e.g., carbide, etc.) {3}
441  DF  .~.~ Calcium containing {1}
442.~.~.~ By reacting carbon and inorganic calcium containing compound

DEFINITION

Classification: 423/442

(under subclass 441) Processes which include the step of reacting carbon with an inorganic compound containing calcium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

174, for processes of making calcium carbide from an impure calcium carbonate such as limestone.