US PATENT SUBCLASS 208 / 82
.~.~ Only selected fractions of product or feed are contacted

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

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
81  DF  .~ With contacting vapor porducts with liquid feed (i.e., product scrubbing and feed stripping) {3}
82.~.~ Only selected fractions of product or feed are contacted

DEFINITION

Classification: 208/82

(under subclass 81) Processes wherein only a part of the vapor product or only a part of the mineral oil to be converted are contacted.

(1) Note. The parts being contacted may be obtained by separation of the vapor product or mineral oil feed into fractions having different properties (e.g., boiling point).