US PATENT SUBCLASS 208 / 237
.~.~ With organic reagent

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

177  DF  REFINING {23}
208 R  DF  .~ Sulfur removal (free or combined sulfur) {17}
237.~.~ With organic reagent {3}
238  DF  .~.~.~> Hydrocarbon containing
239  DF  .~.~.~> Heavy metal soap containing
240  DF  .~.~.~> Oxygen containing

DEFINITION

Classification: 208/237

(under subclass 208) Processes wherein mineral oil is desulfurized by the use of an added organic compound.