US PATENT SUBCLASS 208 / 242
.~.~ With sulfur oxides

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}
242.~.~ With sulfur oxides

DEFINITION

Classification: 208/242

(under subclass 208) Processes wherein a mineral oil is desulfurized by the use of added oxide of sulfur.

SEE OR SEARCH THIS CLASS, SUBCLASS:

219+, for desulfurizing processes wherein a sulfur containing acid is employed.

338, for processes of fractionating mineral oil by extracting with liquid sulfur dioxide.