US PATENT SUBCLASS 208 / 222
.~.~.~ With subsequent treatment of product

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}
219  DF  .~.~ With acids {4}
222.~.~.~ With subsequent treatment of product

DEFINITION

Classification: 208/222

(under subclass 219) Processes wherein the desulfurizing treatment is combined with a nonconversion treatment of the desulfurized oil.

SEE OR SEARCH THIS CLASS, SUBCLASS:

220, for processes wherein sulfur is removed from oil in plural stages, at least one of which is acid desulfurization.