US PATENT SUBCLASS 208 / 338
.~.~ Liquid sulfur dioxide

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

308  DF  FRACTIONATION {5}
311  DF  .~ Liquid extraction with solvents {11}
338.~.~ Liquid sulfur dioxide

DEFINITION

Classification: 208/338

(under subclass 311) Processes wherein liquid sulfur dioxide is employed as a solvent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

242, for processes for desulfurizing mineral oil in which sulfur dioxide is employed.