US PATENT SUBCLASS 423 / 67
.~.~.~ Ammoniating or sulfating

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
62  DF  .~ Group VB metal (V, Nb, or Ta) {4}
65  DF  .~.~ Forming insoluble substance in liquid {2}
67.~.~.~ Ammoniating or sulfating

DEFINITION

Classification: 423/67

(under subclass 65) Processes including the step of chemically forming a compound which contains the ammonium (NH4[supscrpt]+[end supscrpt]) radical or the sulfate (SO4[end subscrpt][supscrpt]2-[end supscrpt]) radical.