US PATENT SUBCLASS 423 / 128
.~.~.~ 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}
111  DF  .~ Group IIIA metal or beryllium (Al, Ga, In, Tl, or Be) {9}
122  DF  .~.~ Forming insoluble substance in liquid {7}
128.~.~.~ Sulfating

DEFINITION

Classification: 423/128

(under subclass 122) Processes including the step of chemically forming a compound containing the sulfate (SO4[supscrpt]2-[end supscrpt])radical.