US PATENT SUBCLASS 423 / 235
.~ Nitrogen or nitrogenous component

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

210  DF  MODIFYING OR REMOVING COMPONENT OF NORMALLY GASEOUS MIXTURE {11}
235.~ Nitrogen or nitrogenous component {3}
236  DF  .~.~> Component also contains carbon (e.g., cyanogen, hydrogen cyanide, etc.)
237  DF  .~.~> Ammonia {1}
239.1  DF  .~.~> Utilizing solid sorbent, catalyst, or reactant {1}

DEFINITION

Classification: 423/235

(under subclass 210) Processes in which the component is molecular nitrogen or a nitrogen-containing compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217, for a process of removing molecular nitrogen from atmospheric air.