US PATENT SUBCLASS 585 / 738
.~.~ With specified isomerizate purification or separation procedure


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

700  DF  SATURATED COMPOUND SYNTHESIS {11}
734  DF  .~ By isomerization {9}
738.~.~ With specified isomerizate purification or separation procedure


DEFINITION

Classification: 585/738

With specified isomerizate purification or separation procedure:

(under subclass 734) Subject matter wherein the effluent from the isomerization reaction is treated, usually by a series of steps, to improve its quality or purity in some way.

(1) Note. A mere nominal "recovery", or "separating" step is not sufficient to warrant placement of a patent herein.

(2) Note. The procedure may involve a chemical reaction but does not result in the net synthesis of a desired, recoverable hydrocarbon or other product.

SEE OR SEARCH THIS CLASS, SUBCLASS:

331, for a process wherein isomerization is followed by alkylation or alkyl transfer to produce a branched-chain paraffin product.

705, for a process which includes the removal of a catalyst component, e.g., aluminum halide, etc., from sludge.