US PATENT SUBCLASS 208 / 193
.~.~.~ With subsequent treatment of the sweet oil

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

177  DF  REFINING {23}
189  DF  .~ Sweetening {6}
191  DF  .~.~ With copper compounds {3}
193.~.~.~ With subsequent treatment of the sweet oil {1}
194  DF  .~.~.~.~> Separation or recovery of copper compound

DEFINITION

Classification: 208/193

(under subclass 191) Processes wherein the sweetening treatment is combined with a subsequent nonconversion treatment of the sweetened oil.

(1) Note. The subsequent treatment may include the removal of the disulfide sulfur formed during sweetening or some other contaminant from the sweetened oil.