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. 30, 2015
Filed:
Jun. 06, 2008
Applicants:
Hiroshi Murata, Tokyo, JP;
Hidenori Iwasawa, Tokyo, JP;
Hirosuke Naruto, Tokyo, JP;
Inventors:
Assignee:
ASAHI KASEI E-MATERIALS CORPORATION, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01);
U.S. Cl.
CPC ...
H01M 2/166 (2013.01); H01M 2/1653 (2013.01); H01M 2/1686 (2013.01);
Abstract
Provided is a multilayer porous film having a porous film comprised of a resin composition comprising a polypropylene and one or more polyolefins other than polypropylenes and an inorganic filler-containing porous layer stacked on at least on one side of the porous film. The multilayer porous film is capable of preventing short circuit between two electrodes even when a heat generation amount is large at the time of abnormal heat generation and therefore satisfying both excellent heat resistance and good shutdown function.