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:
Jan. 31, 2017
Filed:
Dec. 15, 2014
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Abhishek Roy, Edina, MN (US);
Robert C. Cieslinski, Midland, MI (US);
Bruce B. Gerhart, Midland, MI (US);
David D. Hawn, Midland, MI (US);
Mou Paul, Edina, MN (US);
XiaoHua Qiu, Midland, MI (US);
Mark A. Rickard, Midland, MI (US);
Steven Rosenberg, Shorewood, MN (US);
Ian A. Tomlinson, Midland, MI (US);
Chengli Zu, Midland, MI (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/00 (2006.01); B01D 39/14 (2006.01); B29C 44/04 (2006.01); B01D 67/00 (2006.01); B01D 29/46 (2006.01); B01D 71/56 (2006.01); B01D 69/12 (2006.01);
U.S. Cl.
CPC ...
B01D 71/56 (2013.01); B01D 67/0006 (2013.01); B01D 69/125 (2013.01); B01D 2323/36 (2013.01); B01D 2323/40 (2013.01);
Abstract
A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing an azo (—N═N—) content of from 0.75% to 0.95%, as measured by pyrolysis gas chromatography.