US PATENT SUBCLASS 423 / 404
.~.~.~.~.~ Catalyst is metal oxide

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}
400  DF  .~.~ Binary compound (oxide of nitrogen) {3}
402  DF  .~.~.~ Utilizing catalyst {1}
403  DF  .~.~.~.~ And ammonia as reactant {1}
404.~.~.~.~.~ Catalyst is metal oxide

DEFINITION

Classification: 423/404

(under subclass 403) Processes wherein the catalyst contains the oxide of a metal.