US PATENT SUBCLASS 585 / 260
.~.~.~ Using catalyst or support of defined structure, surface area, or pore size

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}
258  DF  .~ Hydrocarbon is contaminant in desired hydrocarbon {1}
259  DF  .~.~ Hydrogenation of diolefin or triple bond {3}
260.~.~.~ Using catalyst or support of defined structure, surface area, or pore size

DEFINITION

Classification: 585/260

Using catalyst or support of defined structure, surface areas, or pore size:

(under subclass 259) Subject matter where the hydrogenation of a bond in a contaminant takes place in the presence of a catalyst or support of specific structure, e.g., gamma-alumina, or of a specific surface area or pore size, e.g., 3 meters per cubic meter, 5-7 angstroms, etc.

(1) Note. The description of a hydrogenation catalyst as a "molecular sieve" is sufficient for placement in this subclass.