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:
Aug. 22, 2017
Filed:
May. 16, 2014
Applicant:
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Inventors:
Masahiro Ohashi, Moriyama, JP;
Hiroshi Sogo, Moriyama, JP;
Assignee:
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); B32B 27/32 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); B32B 27/32 (2013.01); H01M 2/1653 (2013.01); Y10T 428/24998 (2015.04); Y10T 428/249978 (2015.04);
Abstract
Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 μm but not more than 5 μm and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 μm.