US PATENT SUBCLASS 203 / 87
WITH FRACTIONAL CONDENSATION OF VAPOR OUTSIDE STILL


Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

87WITH FRACTIONAL CONDENSATION OF VAPOR OUTSIDE STILL


DEFINITION

Classification: 203/87

(under the class definition) Processes directed to condensing the vapor evolved during the distillation step in a plurality of fractions.

(1) Note. To come within the purview of this subclass a mixed vapor must be produced which is separated into parts by cooling the vapor in a plurality of distinct stages.

SEE OR SEARCH CLASS

201, Distillation: Processes, Thermolytic,

30, for a thermolytic distillation process in which the evolved vapors are condensed in a plurality of distinct stages.

202, Distillation: Apparatus,

199, for apparatus in which vapor is passed through a condensate from itself to surrender high boiling constituents. 208, Mineral Oils: Processes and Products,

342, for a process including fractionally condensing a mineral oil containing vapor mixture.