US PATENT SUBCLASS 423 / 302
.~ Nitrogen containing

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

299  DF  PHOSPHORUS OR COMPOUND THEREOF {5}
302.~ Nitrogen containing

DEFINITION

Classification: 423/302

(under subclass 299) Products or processes wherein the product contains nitrogen.

(1) Note. Nitrogen in the ammonium radical (NH4[supscrpt]+[end supscrpt]) is not considered nitrogen for the purpose of this subclass; see (2) Note in the class definition.