US PATENT SUBCLASS 208 / 306
.~.~ Composite or plural treating agents

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

177  DF  REFINING {23}
299  DF  .~ With solid catalyst or absorbent {8}
306.~.~ Composite or plural treating agents

DEFINITION

Classification: 208/306

(under subclass 299) Processes carried out in the presence of a solid contacting agent which is either a physical mixture of several solids or a complex chemical combination of such solids.

SEE OR SEARCH THIS CLASS, SUBCLASS:

149, for processes of conversion of mineral oil involving contacting the oil with a mixture of dissimilar solids.