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:
Jul. 30, 2013
Filed:
Oct. 17, 2011
Applicants:
Steven D. Jons, Eden Prairie, MN (US);
Allyn R. Marsh, Iii, Lakeville, MN (US);
Inventors:
Steven D. Jons, Eden Prairie, MN (US);
Allyn R. Marsh, III, Lakeville, MN (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 63/00 (2006.01); B01D 63/10 (2006.01); B01D 35/28 (2006.01); B01D 71/00 (2006.01); B01D 69/00 (2006.01); C02F 1/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed toward spiral wound modules including membrane sheets with regions () having different permeabilities. Said regions are arranged either axially or radially or both.