US PATENT SUBCLASS 208 / 369
.~.~ Volatile treatment other than condensation

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

308  DF  FRACTIONATION {5}
347  DF  .~ Distillation {12}
369.~.~ Volatile treatment other than condensation

DEFINITION

Classification: 208/369

(under subclass 347) Processes involving some noncondensation treatment of the volatiles evolved during the distillation.

(1) Note. This subclass contains, for example, processes of filtering or heating the volatiles or utilizing them in some manner in the distillation operation.