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:
Nov. 21, 2006
Filed:
Nov. 22, 2002
Christopher J. Kurth, St. Louis Park, MN (US);
Steven D. Kloos, Chanhassen, MN (US);
Jessica A. Peschl, Minneapolis, MN (US);
Leonard T. Hodgins, Closter, NJ (US);
Christopher J. Kurth, St. Louis Park, MN (US);
Steven D. Kloos, Chanhassen, MN (US);
Jessica A. Peschl, Minneapolis, MN (US);
Leonard T. Hodgins, Closter, NJ (US);
GE Osmonics, Inc., Minnetonka, MN (US);
Abstract
Semi-permeable membranes are described that allow for the efficient processing of many liquid based feed solutions, particularly those that contain acids. The membranes of this invention are able to process such feeds with high permeate rates while maintaining excellent retention of dissolved metals, cations, and organic compounds, even in the presence of hot concentrated acids. The semi-permeable membranes of this invention are able to conduct such separations for a useful period of time due to their chemical stability towards acids and their ability to permeate acids.