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:
Jun. 09, 2020
Filed:
Jun. 19, 2015
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); C08J 9/28 (2006.01); C08J 9/00 (2006.01); B32B 5/32 (2006.01); B32B 27/32 (2006.01); B32B 27/08 (2006.01); B32B 5/18 (2006.01); B32B 27/24 (2006.01); B32B 27/20 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); B32B 5/18 (2013.01); B32B 5/32 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/24 (2013.01); B32B 27/32 (2013.01); C08J 9/00 (2013.01); C08J 9/28 (2013.01); H01M 2/16 (2013.01); H01M 2/1653 (2013.01); B32B 2264/025 (2013.01); B32B 2264/0235 (2013.01); B32B 2264/0257 (2013.01); B32B 2264/10 (2013.01); B32B 2264/102 (2013.01); B32B 2264/104 (2013.01); B32B 2266/025 (2013.01); B32B 2266/102 (2016.11); B32B 2270/00 (2013.01); B32B 2307/20 (2013.01); B32B 2307/306 (2013.01); B32B 2307/50 (2013.01); B32B 2307/514 (2013.01); B32B 2307/581 (2013.01); B32B 2307/724 (2013.01); B32B 2307/732 (2013.01); B32B 2457/10 (2013.01);
Abstract
A polyolefin multilayer microporous membrane is disclosed. The polyolefin multilayer microporous membrane has a low air permeability value, maintains high porosity and mechanical strength even when formed into a thin film. The polyolefin multilayer microporous membrane also has excellent impedance characteristics. The polyolefin multilayer microporous membrane has excellent battery characteristics when used as a battery separator.