US PATENT SUBCLASS 423 / 631
.~.~.~.~ Utilizing nitrogenous compound as reactant

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

579  DF  OXYGEN OR COMPOUND THEREOF {4}
592  DF  .~ Metal containing {12}
624  DF  .~.~ Group IIIA metal or beryllium (Al, Ga, In, Tl, or Be) {1}
625  DF  .~.~.~ Aluminum {6}
631.~.~.~.~ Utilizing nitrogenous compound as reactant

DEFINITION

Classification: 423/631

(under subclass 625) Processes in which preparation of the aluminum compound includes the use of a nitrogen compound as a reactant.

SEE OR SEARCH THIS CLASS, SUBCLASS:

626, for processes wherein the nitrogen containing compound reactant is nitric acid.