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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.:

US 9203070 B1

PDFFull Text
Expired
Date of Patent:
Dec. 01, 2015

Filed:

Mar. 14, 2014

Method to produce nanoporous polymeric membranes

Applicant:

University of Washington Through Its Center for Commercialization, Seattle, WA (US);

Inventors:

Vipin Kumar, Seattle, WA (US);

Brian Aher, Seattle, WA (US);

Krishna Nadella, Redmond, WA (US);

Michael Waggoner, Seattle, WA (US);

Assignee:

University of Washington through its Center for Commercialization, Seattle, WA (US);

Attorney:

Christensen O'Connor Johnson Kindness PLLC

Primary Examiner:

Kara Boyle

Int. Cl.
CPC ...
C08J 9/00 (2006.01); B29D 7/00 (2006.01); B29C 43/00 (2006.01); B29C 44/00 (2006.01); B29C 44/10 (2006.01); B29C 59/02 (2006.01); B29C 67/20 (2006.01); H01M 2/14 (2006.01); H01M 2/16 (2006.01);
U.S. Cl.
CPC ...
H01M 2/145 (2013.01); H01M 2/1653 (2013.01);
Abstract

A method for making a flat polymer foam having a core layer of nano-sized open, interconnected cells that includes saturating a solid-state polymer with a supercritical fluid, allowing the gas to desorb for at least 35 minutes, and then heating the gas-saturated solid polymer for at least 3 minutes while constraining the foam in the thickness dimension. Any skin layer formed on the exterior may be removed via polishing, thus creating a foam with an open structure from side to side. The foam can be used as a battery separator.

Find Patent Forward Citations

Kumar, Vipin. (2015). Method to produce nanoporous polymeric membranes (U.S. Patent No. 9203070). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9203070

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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