US PATENT SUBCLASS 423 / 391
.~.~.~.~ By reacting a salt and an acid


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

351  DF  NITROGEN OR COMPOUND THEREOF (EXCEPT AMMONIUM SALT OF NON-NITROGEN ACID) {5}
385  DF  .~ Oxygen containing {4}
387  DF  .~.~ Hydrogen containing {2}
390.1  DF  .~.~.~ Nitric acid {4}
391.~.~.~.~ By reacting a salt and an acid


DEFINITION

Classification: 423/391

(under subclass 390.1) Processes which include the step of contacting a salt and an acid for a reaction.