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. 16, 2017
Filed:
Aug. 26, 2014
Applicant:
Mitsubishi Paper Mills Limited, Tokyo, JP;
Inventors:
Hiroo Kaji, Tokyo, JP;
Toshihiro Shigematsu, Tokyo, JP;
Assignee:
MITSUBISHI PAPER MILLS LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); D21H 11/18 (2006.01); D21H 13/02 (2006.01); H01M 2/14 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1626 (2013.01); D21H 11/18 (2013.01); D21H 13/02 (2013.01); H01M 2/145 (2013.01);
Abstract
A separator for electrochemical element, comprising a porous sheet that contains as a main fiber, a fibrillated solvent spun cellulose fiber with an average fiber length of 0.40 to 1.10 mm, has an average internal bond strength of 60 mJ or more in a thickness direction, and has a lowest internal bond strength of 30 mJ or more in the thickness direction, a process for producing the separator, and an electrochemical element using the separator. The separator for electrochemical element has strong mechanical strength and excellent processability.