US PATENT SUBCLASS 585 / 271
.~ Partial

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

250  DF  ADDING HYDROGEN TO UNSATURATED BOND OF HYDROCARBON, I.E., HYDROGENATION {10}
271.~ Partial {2}
272  DF  .~.~> Hydrogen supplied by water or alcohol
273  DF  .~.~> Using Group VIII metal-containing catalyst {1}

DEFINITION

Classification: 585/271

Partial:

(under subclass 250) Subject matter wherein only part of the unsaturation in a hydrocarbon feed molecule is hydrogenated resulting in an unsaturated product, such as the conversion of butadiene to butene or acetylene to ethylene.