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. 01, 2017
Filed:
Sep. 18, 2007
Applicants:
Hiroshi Hatayama, Tokyo, JP;
Hiroshi Sogo, Tokyo, JP;
Inventors:
Hiroshi Hatayama, Tokyo, JP;
Hiroshi Sogo, Tokyo, JP;
Assignee:
ASAHI KASEI CHEMICALS CORPORATION, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); B01D 71/26 (2006.01); C08J 5/18 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 2/1633 (2013.01); B01D 71/26 (2013.01); C08J 5/18 (2013.01); H01M 2/166 (2013.01); H01M 2/1646 (2013.01); H01M 2/1653 (2013.01); H01M 10/0525 (2013.01); C08J 2323/00 (2013.01); H01M 2220/20 (2013.01); Y02T 10/7011 (2013.01);
Abstract
The present invention provides a polyolefin microporous membrane made of a polyolefin resin and an inorganic particle, and the puncture strength of the microporous membrane is 3 N/20 μm or more and the membrane thickness retention ratio in penetration creep is 16% or more, thereby being excellent in safety and long-term reliability, and a separator for a nonaqueous electrolyte battery, and the like can be provided.