US PATENT SUBCLASS 423 / 488
.~.~ Recovery or purification

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

462  DF  HALOGEN OR COMPOUND THEREOF {10}
481  DF  .~ Hydrogen halide {4}
488.~.~ Recovery or purification

DEFINITION

Classification: 423/488

(under subclass 481) Processes which include the step of removing an impurity either from the product or from the initial mixture, e.g., removing H2O, free halogen, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

240+, for a process of removing impurities from a gaseous mixture having a halogen or a compound thereof as a constituent therein.