The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1995
Filed:
Apr. 15, 1994
Robert C Schucker, Baton Rouge, LA (US);
Exxon Research & Engineering Company, Florham Park, NJ (US);
Abstract
A feed stream comprising a mixture of at least two separable components is separated into a permeate rich in one or more components and a retentate lean in those same components by a process comprising dissolving the feed in a supercritical solvent under supercritical conditions to produce a solution and contacting the solution with a dense, non-porous perstraction membrane having a first and a second surface, said contacting being along a first surface, wherein a portion of the feed dissolves into the first surface of the membrane, migrates through the perstraction membrane under a concentration gradient and emerges from the membrane at the second surface, as a permeate, the permeate being removed from the second surface by use of a sweep fluid comprising a supercritical solvent at supercritical conditions which may be the same as or different from the supercritical solvent in which the feed is dissolved.