US PATENT SUBCLASS 208 / 246
.~.~ With Group IB metal or compound

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}
246.~.~ With Group IB metal or compound

DEFINITION

Classification: 208/246

(under subclass 208) Processes wherein mineral oil is desulfurized by the use of a Group IB metal (Cu, Ag or Au) or compound thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

296, for other processes of refining wherein Group IB metal compounds are used.