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. 29, 2017
Filed:
Nov. 25, 2014
Applicant:
Kuraray Co., Ltd., Kurashiki-shi, JP;
Inventors:
Tomohiro Hayakawa, Okayama, JP;
Hiroyuki Kawai, Okayama, JP;
Hideo Hayashi, Okayama, JP;
Koichi Kambe, Osaka, JP;
Assignee:
KURARAY CO., LTD., Kurashiki-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 2/14 (2006.01); H01M 2/18 (2006.01); B29K 29/00 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1626 (2013.01); H01M 2/145 (2013.01); H01M 2/162 (2013.01); H01M 2/1633 (2013.01); H01M 2/18 (2013.01); B29K 2029/04 (2013.01); B29K 2229/04 (2013.01);
Abstract
Provided are a separator for a nonaqueous cell that has air permeability and is small in thickness while maintaining strength properties; and a nonaqueous cell having this separator. The separator includes a fiber sheet in which a polyvinyl alcohol fiber is incorporated in a proportion of 30% or more by mass (based on the fiber sheet). The fiber has a fiber breaking temperature in heated water of lower than 100° C. and higher than 85° C.