US 11,986,772 B2
Compact spiral-wound filter elements, modules and systems
Jonathan Steen, Billerica, MA (US)
Assigned to EMD Millipore Corporation, Burlington, MA (US)
Filed by EMD Millipore Corporation, Burlington, MA (US)
Filed on Mar. 24, 2022, as Appl. No. 17/656,285.
Application 16/428,189 is a division of application No. 14/750,838, filed on Jun. 25, 2015, granted, now 10,399,039, issued on Sep. 3, 2019.
Application 17/656,285 is a continuation of application No. 16/428,189, filed on May 31, 2019, granted, now 11,311,841.
Claims priority of provisional application 62/017,084, filed on Jun. 25, 2014.
Prior Publication US 2022/0212146 A1, Jul. 7, 2022
Int. Cl. B01D 61/02 (2006.01); B01D 61/08 (2006.01); B01D 61/14 (2006.01); B01D 61/18 (2006.01); B01D 63/10 (2006.01); B01D 63/12 (2006.01); B01D 71/68 (2006.01); C02F 1/44 (2023.01); D06C 15/02 (2006.01); B01D 67/00 (2006.01)
CPC B01D 63/12 (2013.01) [B01D 61/025 (2013.01); B01D 61/145 (2013.01); B01D 63/10 (2013.01); B01D 63/103 (2013.01); C02F 1/44 (2013.01); C02F 1/441 (2013.01); C02F 1/442 (2013.01); D06C 15/02 (2013.01); B01D 61/147 (2013.01); B01D 67/0086 (2013.01); B01D 71/68 (2013.01); B01D 2313/14 (2013.01); B01D 2313/143 (2013.01); B01D 2313/146 (2013.01); B01D 2313/50 (2013.01); B01D 2315/10 (2013.01); B01D 2315/16 (2013.01); B01D 2317/02 (2013.01); C02F 1/444 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A spiral-wound filter element comprising: a filtration membrane and a feed screen, wherein said feed screen provides at least 70% of the mass-transfer-limited permeate flux as a reference cassette filter having the same filtration membrane and feed spacer as the spiral-wound filter element, both run at the same cross flow flux and, wherein the outermost feed channel of the spiral-wound filter element is blocked.