US PATENT SUBCLASS 208 / 236
.~.~ With nitrogen containing treating 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}
236.~.~ With nitrogen containing treating reagent

DEFINITION

Classification: 208/236

(under subclass 208) Processes wherein mineral oil is desulfurized by use of a nitrogen containing compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:

206, and 207, for sweetening treatments employing nitrogen containing treating agents.

232, for desulfurization processes wherein alkanol amines are used in combination with alkali metal compounds.