US PATENT SUBCLASS 208 / 213
.~.~.~ With solid catalyst or absorbent

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}
209  DF  .~.~ With hydrogen {4}
213.~.~.~ With solid catalyst or absorbent {4}
214  DF  .~.~.~.~> With hydrogen yielding material (H donor)
215  DF  .~.~.~.~> With heavy metal sulfide
216 R  DF  .~.~.~.~> With group VI metal or compound {1}
217  DF  .~.~.~.~> With Group VIII metal or compound

DEFINITION

Classification: 208/213

(under subclass 209) Processes wherein the hydrodesulfurization takes place in the presence of a solid catalyst or adsorbent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

299+, for other refining processes carried out in the presence of a solid catalyst or adsorbent.