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. 29, 2020
Filed:
Mar. 01, 2017
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Naoki Mizuno, Nasushiobara, JP;
Masami Sugata, Nasushiobara, JP;
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 2/14 (2006.01); B29C 55/14 (2006.01); C08J 7/04 (2020.01); C08J 9/28 (2006.01); H01G 11/52 (2013.01); B29D 7/01 (2006.01); C08J 5/22 (2006.01); B29L 31/34 (2006.01); B29K 105/04 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1653 (2013.01); B29C 55/14 (2013.01); B29C 55/143 (2013.01); B29D 7/01 (2013.01); C08J 5/2231 (2013.01); C08J 7/0427 (2020.01); C08J 9/28 (2013.01); H01G 11/52 (2013.01); H01M 2/145 (2013.01); H01M 2/16 (2013.01); H01M 2/1686 (2013.01); B29K 2105/041 (2013.01); B29L 2007/002 (2013.01); B29L 2031/3468 (2013.01); C08J 2323/06 (2013.01); Y02E 60/13 (2013.01);
Abstract
A polyolefin microporous membrane has a variation range of F25 value in a longitudinal direction of 1 MPa or less; a thickness of 3 μm or more and less than 7 μm; and a length of 1,000 m or more (wherein the F25 value is a value obtained by measuring a load value applied to a test specimen when the test specimen is stretched by 25% using a tensile tester; and dividing the load value by a value of a cross-sectional area of a test specimen).