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:
Jun. 26, 1984
Filed:
Jun. 25, 1982
Applicant:
Inventors:
Theodore J Wydeven, Sunnyvale, CA (US);
Moshe G Katz, Givataim, IL;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
521141 ; 521142 ; 521149 ; 264 41 ;
Abstract
A method for preparing water-insoluble asymmetric reverse osmosis membranes from water-soluble polymers is disclosed. The method involves casting a polymer film, partially drying it and then contacting it with a transition metal polyvalent ion solution. Optionally, the product of the contacting is cross-linked such as by radiation or heat. The membrane products are disclosed as well.