US PATENT SUBCLASS 208 / 185-- .~.~.~ With gaseous treating agent

US PATENT SUBCLASS 208 / 185
.~.~.~ With gaseous treating agent

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

177	DF	REFINING {23}
179	DF	.~ Purifying used oil {3}
184	DF	.~.~ Distillation or degassing {2}
185		.~.~.~ With gaseous treating agent

DEFINITION

Classification: 208/185

(under subclass 184) Processes wherein distillation or degassing treatment is carried out in the presence of an added gaseous treating agent.

(1) Note. Steam is an example of gaseous treating agents provided for herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

356, and 362+, for similar processes of distilling raw mineral oils.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

113+, for compositions for or subcombination compositions for or breaking of or inhibiting of colloid systems (e.g., foam breaking, emulsion breaking, dispersion inhibiting, suspension settling, gel breaking, smoke suppressing, coagulating, flocculating), when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art. Combinations of emulsion breaking and a treatment of the mineral oil provided for in Class 208 are classified in Class 208.