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.

Date of Patent:
Jul. 28, 1992

Filed:

Jun. 27, 1991
Applicant:
Inventor:

Lucie Y LaFreniere, Brights Grove, CA;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210651 ; 210652 ; 210653 ; 210654 ;
Abstract

Solvents comprising C.sub.3, C.sub.4, C.sub.5 and C.sub.6 aliphatic hydrocarbons (i.e. propane, propylene, butane, butylene, pentane, cyclopentane, pentene, hexane, cyclohexane, hexene and their isomers) and mixtures thereof, preferably C.sub.3 and C.sub.4 hydrocarbons and mixtures thereof are recovered from hydrocarbon oils in the liquid phase by the reverse osmosis permeation of said solvent through a polyimide reverse osmosis membrane at low temperature.


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LaFreniere, Lucie. (1992). Reverse osmosis process for recovery of c.sub.3 -c.sub.6 aliphatic (U.S. Patent No. 5133867). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5133867

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