US PATENT SUBCLASS 208 / 218
.~.~ Split treatment


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}
218.~.~ Split treatment


DEFINITION

Classification: 208/218

(under subclass 208) Processes wherein a mineral oil is divided into several fractions, at least one of which is treated to remove sulfur therefrom and then the separate fractions are reblended.

(1) Note. Processes wherein mineral oil is fractionated and then at least one fraction is desulfurized, there being no reblending of the fractions, are classified in the appropriate subclass providing for desulfurizing combined with a preliminary treatment of the oil.