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:
Feb. 28, 2017
Filed:
Mar. 31, 2015
Applicant:
Globalfoundries Inc., Grand Cayman, KY;
Inventors:
Young-Hye Na, San Jose, CA (US);
Ratnam Sooriyakumaran, San Jose, CA (US);
Ankit Vora, San Jose, CA (US);
Assignee:
GLOBALFOUNDRIES INC., Grand Cayman, KY;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/56 (2006.01); B01D 69/12 (2006.01); B01D 61/02 (2006.01); B01D 67/00 (2006.01); C09D 5/16 (2006.01); C09D 133/10 (2006.01); C09D 133/12 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0006 (2013.01); B01D 69/12 (2013.01); B01D 69/125 (2013.01); B01D 71/56 (2013.01); C09D 5/1637 (2013.01); C09D 133/10 (2013.01); C09D 133/12 (2013.01); B01D 61/025 (2013.01); B01D 2323/30 (2013.01); B01D 2323/40 (2013.01); B01D 2325/48 (2013.01);
Abstract
A polymeric membrane includes an active layer over a support, wherein the active layer includes at least two chemically distinct polyamide films. A first one of the films is in contact with the support, and a second one of the films is not in contact with the support. The second polyamide film is crosslinked with the first polyamide film at an interface therewith, and the second polyamide film includes a structure having a side chain group including an ammonium salt.