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:
May. 07, 2019
Filed:
Jun. 27, 2014
Applicant:
Zeon Corporation, Tokyo, JP;
Inventors:
Assignee:
ZEON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); B32B 27/04 (2006.01); B32B 27/24 (2006.01); B32B 27/00 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 2/1653 (2013.01); B32B 27/00 (2013.01); B32B 27/04 (2013.01); B32B 27/06 (2013.01); B32B 27/08 (2013.01); B32B 27/24 (2013.01); H01M 2/1673 (2013.01); H01M 2/1686 (2013.01); B32B 2307/50 (2013.01); B32B 2307/724 (2013.01); B32B 2457/00 (2013.01); B32B 2457/10 (2013.01); H01M 10/0525 (2013.01); H01M 2220/30 (2013.01);
Abstract
A porous membrane composition for a lithium ion secondary battery, including a first particulate polymer, wherein the first particulate polymer has a core-shell structure including a core portion and a shell portion that partially covers an outer surface of the core portion, the core portion is formed from a polymer having a swelling degree in an electrolytic solution of 5 times or more and 30 times or less, and the shell portion is formed from a polymer having a swelling degree in the electrolytic solution of 1 time or more and 4 times or less.