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:
Apr. 18, 2017
Filed:
May. 19, 2014
Applicant:
Emd Millipore Corporation, Billerica, MA (US);
Inventors:
John Charkoudian, Carlisle, MA (US);
John P. Puglia, Townsend, MA (US);
Nicole Fox, Lowell, MA (US);
Assignee:
EMD Millipore Corporation, Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 67/00 (2006.01); B01D 71/10 (2006.01); B01D 39/16 (2006.01); C08B 15/00 (2006.01); C08L 1/02 (2006.01); B01D 39/18 (2006.01);
U.S. Cl.
CPC ...
B01D 39/1676 (2013.01); B01D 39/18 (2013.01); B01D 67/0093 (2013.01); B01D 71/10 (2013.01); C08B 15/005 (2013.01); C08L 1/02 (2013.01); B01D 2323/283 (2013.01); B01D 2323/30 (2013.01); B01D 2325/36 (2013.01); Y10T 29/49885 (2015.01);
Abstract
The present invention relates to a nanofilter formed by using a porous ultrafiltration membrane as a precursor, and carefully controlling reaction conditions so as to maintain sufficient hydrophilic nature of the membrane while causing the pore structure to close to a nanofilter range (less than 400 Daltons). This produces a solvent stable cellulose nanofiltration membrane capable of operating at satisfactory flux in aqueous solutions, and being low binding to organic biomaterials.