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:
Oct. 29, 2013
Filed:
Jun. 29, 2010
Christopher James Kurth, Eden Prairie, MN (US);
Jeffrey Alan Koehler, Pasadena, CA (US);
Meijuan Zhou, Freemont, CA (US);
Brett Anderson Holmberg, Los Angeles, CA (US);
Robert Leon Burk, Seattle, WA (US);
Christopher James Kurth, Eden Prairie, MN (US);
Jeffrey Alan Koehler, Pasadena, CA (US);
Meijuan Zhou, Freemont, CA (US);
Brett Anderson Holmberg, Los Angeles, CA (US);
Robert Leon Burk, Seattle, WA (US);
NanoH2O, Inc., El Segundo, CA (US);
Abstract
RO membranes using chlorinated water as a feed stream maybe protected from damage by the chlorine with a protective layer including reactive nitrogen which forms chloromines on the surface of the membrane that reduce chlorine penetration. This protective layer also provides substantial anti-fouling capabilities, whether used with a chlorinated or unchlorinated feed stream because the chloramines are anti-bacterial. Although chlorine is lost in use, the anti-fouling layer or coating can be recharged with additional chlorine without damaging the discrimination layer. The anti-fouling layer or coating may be advantageously used with Thin film composite, TFC, membranes for use in forward and reverse osmosis may include nanoparticles, monohydrolyzed and/or di-hydrolyzed TMC, and/or alkaline earth alkaline metal complexes or other additives.