US PATENT SUBCLASS 423 / 657
.~.~ By reacting water or aqueous solution with metal or compound thereof

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

644  DF  HYDROGEN OR COMPOUND THEREOF {3}
648.1  DF  .~ Elemental hydrogen {6}
657.~.~ By reacting water or aqueous solution with metal or compound thereof {1}
658  DF  .~.~.~> Iron

DEFINITION

Classification: 423/657

(under subclass 648.1) Processes in which preparation of the hydrogen includes the step of reacting water in any state or liquid water containing a solute with a metal or compound thereof.