US PATENT SUBCLASS 208 / 275
.~.~.~.~ Solid absorbent

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

177  DF  REFINING {23}
265  DF  .~ With acids {4}
266  DF  .~.~ Sulfuric acid {7}
273  DF  .~.~.~ With subsequent treatment of the oil {2}
275.~.~.~.~ Solid absorbent

DEFINITION

Classification: 208/275

(under subclass 273) Processes wherein the sulfuric acid refined oil is subsequently treated with a solid adsorbent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

250, for processes, particularly manipulative techniques of contacting mineral oils with solid adsorbents in a desulfurization treatment of the oils.

299+, for processes, particularly manipulative techniques of contacting mineral oils with solid contact treating agents in refining processes.