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:
Sep. 18, 2018
Filed:
May. 28, 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); H01M 2/14 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 71/26 (2006.01); B29C 47/00 (2006.01); B29C 47/16 (2006.01); B29C 47/60 (2006.01); B29C 47/88 (2006.01); B29C 55/00 (2006.01); B29C 55/14 (2006.01); C08J 5/18 (2006.01); C08J 9/28 (2006.01); C08L 23/06 (2006.01); B29C 47/40 (2006.01); B29L 31/34 (2006.01); B29K 23/00 (2006.01); B29K 105/04 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1653 (2013.01); B01D 67/002 (2013.01); B01D 67/0027 (2013.01); B01D 69/02 (2013.01); B01D 71/26 (2013.01); B29C 47/0021 (2013.01); B29C 47/0057 (2013.01); B29C 47/16 (2013.01); B29C 47/40 (2013.01); B29C 47/6087 (2013.01); B29C 47/8845 (2013.01); B29C 55/005 (2013.01); B29C 55/143 (2013.01); C08J 5/18 (2013.01); C08J 9/28 (2013.01); C08L 23/06 (2013.01); H01M 2/145 (2013.01); B01D 2325/20 (2013.01); B01D 2325/22 (2013.01); B01D 2325/24 (2013.01); B01D 2325/34 (2013.01); B29K 2023/0683 (2013.01); B29K 2105/041 (2013.01); B29K 2995/0065 (2013.01); B29L 2031/3468 (2013.01); C08J 2201/0482 (2013.01); C08J 2205/044 (2013.01); C08J 2323/06 (2013.01); C08J 2423/06 (2013.01); C08L 2207/068 (2013.01);
Abstract
A polyolefin microporous membrane is disclosed. The membrane includes at least one microporous membrane layer, where the microporous membrane layer has an air permeability between about 100 sec/100 cc and about 220 sec/100 cc, a pin puncture strength of at least 550 gf, and a crystallization half time tof from 10 to 35 minutes when subjected to isothermal crystallization at 117° C. The air permeability and the pin puncture strength are normalized to a thickness of 16 μm.