US PATENT SUBCLASS 423 / 363
.~.~.~.~ Alkali or alkaline earth metal

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}
352  DF  .~ Ammonia or ammonium hydroxide {6}
359  DF  .~.~ From elemental hydrogen and nitrogen {3}
362  DF  .~.~.~ Utilizing metal containing catalyst {1}
363.~.~.~.~ Alkali or alkaline earth metal

DEFINITION

Classification: 423/363

(under subclass 362) Processes in which the metal is lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium or barium.