US PATENT SUBCLASS 423 / 57
.~.~.~ Sulfating

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

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
53  DF  .~ Group VIB metal (Cr, Mo, or W) {4}
55  DF  .~.~ Forming insoluble substance in liquid {3}
57.~.~.~ Sulfating

DEFINITION

Classification: 423/57

(under subclass 55) Processes including the step of chemically forming a compound having the sulfate (SO4[supscrpt]2-[end supscrpt]) radical.