US PATENT SUBCLASS 208 / 240
.~.~.~ Oxygen containing

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}
237  DF  .~.~ With organic reagent {3}
240.~.~.~ Oxygen containing

DEFINITION

Classification: 208/240

(under subclass 237) Processes wherein an oxygen containing organic compound is employed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

204+, for sweetening processes employing oxygen containing organic compounds in combination with an alkali metal

hydroxide or carbonate.

231+, for desulfurization processes using oxygen containing organic compounds in combination with an alkali metal compound.

239, for processes of desulfurization with heavy metal soaps.