US PATENT SUBCLASS 423 / 400
.~.~ Binary compound (oxide of nitrogen)

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.~.~ Binary compound (oxide of nitrogen) {3}
401  DF  .~.~.~> Utilizing nitrosyl chloride as reactant
402  DF  .~.~.~> Utilizing catalyst {1}
405  DF  .~.~.~> Nitric oxide (NO)

DEFINITION

Classification: 423/400

(under subclass 385) Products or processes wherein the product contains only nitrogen and oxygen.

SEE OR SEARCH THIS CLASS, SUBCLASS:

390.1, for processes for the production of nitric acid, which may include production of nitrogen oxides.