.~ Including contact with extraneous additive other than hydrogen, e.g., solvent, etc. {7}
429
.~.~ Distinct addition zones
DEFINITION
Classification: 208/429
Distinct addition zones:
(under subclass 428) Subject matter in which additive comes into contact with feedstock in a plurality of distinct contact zones.
(1) Note. The same additive may be employed in each contacting zone.
(2) Note. An extraction which occurs in a contacting zone may extract or dissolve desired hydrocarbon fractions or may be a mere washing or leaching of inorganic components, etc.
