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. 22, 2015
Filed:
Feb. 21, 2012
Applicant:
Kazuaki Matsumoto, Tokyo, JP;
Inventor:
Kazuaki Matsumoto, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01G 9/02 (2006.01); H01M 2/14 (2006.01); H01M 2/16 (2006.01); H01G 11/52 (2013.01); H01G 11/06 (2013.01); H01G 11/60 (2013.01);
U.S. Cl.
CPC ...
H01G 9/02 (2013.01); H01G 11/06 (2013.01); H01G 11/52 (2013.01); H01M 2/145 (2013.01); H01M 2/1626 (2013.01); H01M 2/1633 (2013.01); H01G 11/60 (2013.01); Y02E 60/13 (2013.01); Y02T 10/7022 (2013.01); Y10T 29/49108 (2015.01);
Abstract
The object of an exemplary embodiment of the invention is to provide a separator for an electric storage device which has small heat shrinkage in a high-temperature environment, and in which the increase of the battery temperature can be suppressed. An exemplary embodiment of the invention is a separator for an electric storage device, which comprises a cellulose derivative represented by a prescribed formula. The separator for an electric storage device can be obtained, for example, by treating a cellulose separator containing cellulose with a halogen-containing carboxylic acid or a halogen-containing alcohol.