US PATENT SUBCLASS 423 / 145
.~.~.~.~ 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}
138  DF  .~ Iron group metal (Fe, Co, or Ni) {7}
140  DF  .~.~ Forming insoluble substance in liquid {4}
143  DF  .~.~.~ Utilizing or forming nitrogenous compound {2}
145.~.~.~.~ Sulfating

DEFINITION

Classification: 423/145

(under subclass 143) Processes including the step of chemically forming a compound containing the sulfate (SO4[supscrpt]2-[end supscrpt]) radical.