US PATENT SUBCLASS 208 / 298
.~ With liquid treating agent (includes slurries of solids)


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

177  DF  REFINING {23}
298.~ With liquid treating agent (includes slurries of solids)


DEFINITION

Classification: 208/298

(under subclass 177) Processes involving contacting mineral oil with liquid treating agents not provided for above.

(1) Note. Slurries of solids are included herein as liquid

treating agents when handled as a liquid.

(2) Note. This subclass is the collecting place for manipulative techniques for refining mineral oil with liquid treating agents claimed broadly, or treating agents not provided for above. Processes involving some manipulative technique and also specifying the use of a treating agent provided for above are cross referenced to this subclass if necessary.

SEE OR SEARCH THIS CLASS, SUBCLASS:

339, for solvent fractionation of mineral oils involving some particular liquid to liquid contacting procedure.