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. 30, 2018
Filed:
Mar. 15, 2013
3m Innovative Properties Company, St. Paul, MN (US);
University of Connecticut, Farmington, CT (US);
Jeffrey R. McCutcheon, Farmington, CT (US);
Thomas J. Hamlin, Saint Paul, MN (US);
Mark T. Meyering, Saint Paul, MN (US);
Liwei Huang, Farmington, CT (US);
3M Innovative Properties Company, St. Paul, MN (US);
University of Connecticut, Farmington, CT (US);
Abstract
Provided are thin film composite membrane structures comprising: a selective membrane layer for ion rejection attached to a support layer, the support layer comprising a multi-zone microfiltration membrane comprising: a porous support material; and at least two microfiltration zones, where a first zone comprises a first membrane and a second zone that is attached to the first zone and that coats at least a portion of the porous support material. Thin film composite membrane structures may be provided in reverse osmosis systems or nanofiltration systems. Also, thin film composite membrane structures may be provided in direct osmotic concentration systems, forward osmosis systems, or pressure retarded osmosis systems.