US PATENT SUBCLASS 585 / 702
.~ Synthesis catalyst, solvent, or component thereof used as agent in hydrocarbon purification or separation


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

700  DF  SATURATED COMPOUND SYNTHESIS {11}
702.~ Synthesis catalyst, solvent, or component thereof used as agent in hydrocarbon purification or separation {1}
703  DF  .~.~> By interaction with nonhydrocarbon


DEFINITION

Classification: 585/702

Synthesis catalyst, solvent, or component thereof used as agent in hydrocarbon purification or separation:

(under subclass 700) Subject matter in which a material which is a catalyst or solvent or component thereof already used, or to be used, in a synthesis operation is used as an agent for treating a hydrocarbon to improve the hydrocarbon by removing or making innocuous undesired materials contained in the hydrocarbon.

(1) Note. Where a catalyst or solvent used in a first hydrocarbon synthesis is further used in a second hydrocarbon synthesis, which second synthesis may result in separating out the catalyst from an additional hydrocarbon product, the second synthesis is not considered to be a separation treatment for this subclass.

(2) Note. The material used in the two treatments must be the same material, not merely two different batches of material having the same composition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

301, for a process in which the same catalyst, solvent, or component thereof is used in plural parallel syntheses.

311, and 312, for plural diverse serial syntheses which use the same catalyst or in which one synthesis rehabilitates the catalyst for the other synthesis, respectively.