US PATENT SUBCLASS 208 / 348
.~.~ With nonvapor compound added prior to or during vaporization


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

308  DF  FRACTIONATION {5}
347  DF  .~ Distillation {12}
348.~.~ With nonvapor compound added prior to or during vaporization


DEFINITION

Classification: 208/348

(under subclass 347) Processes wherein a nongaseous compound is added to the distilland prior to or during the distillation.

(1) Note. The additive materials may aid the distillation,

per se, or prevent corrosion of the apparatus, or may be volatilized during the distillation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47, for process of converting mineral oil chemically wherein nongaseous materials are added to the system to prevent corrosion in the system.

125, through 127, for cracking processes wherein a nongaseous, noncatalytic compound is added.

SEE OR SEARCH CLASS 203, Distillation: Processes, Separatory,

6+, for a distillation process in which a nongaseous material is added to the distilland to inhibit corrosion and subclasses 50+ for a distillation process in which the nongaseous material is added to the distilland to aid the distillation.