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. 05, 2005
Filed:
Mar. 16, 2000
Applicants:
Emanuel Korngold, Beer Sheva, IL;
Elisheva Zisner, Ra'anana, IL;
Reuven Wachs, Jerusalem, IL;
Inventors:
Assignee:
Pervasiv LTD, Ashkelon, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F001/44 ;
U.S. Cl.
CPC ...
Abstract
A pervaporation process for separating organic liquid mixtures of components having differing polarities, uses an ion exchange membrane which comprises a polymerized alkene including pendant groups of formula SON(R)—A—QX where R is H or alkyl, A is alkylene, Q is quaternary ammonium, and X is a negatively-charged counter-ion, the sulfur content of the membrane being in the range 3-10 wt. %.