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. 23, 2016
Filed:
Nov. 19, 2012
Pall Corporation, Port Washington, NY (US);
Geoffrey Patrick Larue, Gulf Breeze, FL (US);
Xiaosong Wu, Pensacola, FL (US);
Martin Smith, Northport, NY (US);
Pall Corporation, Port Washington, NY (US);
Abstract
Asymmetric microporous membranes with localized asymmetries, devices including the membranes, and methods of making and using the membranes, are disclosed. The asymmetric microporous membranes have a first surface and a second surface and an interior bulk defined by the first and second surfaces, wherein the first surface has at least a first region and a second region, the first region having a first porosity comprising a first mean pore size, and the second region having a second porosity comprising a second mean pore size, wherein the ratio of first mean pore size to the second mean pore size is at least about 5:1.