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:
Dec. 25, 2018
Filed:
Apr. 27, 2016
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Hitoshi Kishimoto, Niihama, JP;
Yousuke Tsukuda, Niihama, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/18 (2006.01); H01M 2/14 (2006.01); H01M 10/0525 (2010.01); B65H 75/08 (2006.01); B65H 75/00 (2006.01); B65H 75/02 (2006.01);
U.S. Cl.
CPC ...
H01M 2/18 (2013.01); B65H 75/00 (2013.01); B65H 75/02 (2013.01); B65H 75/08 (2013.01); H01M 2/145 (2013.01); H01M 10/0525 (2013.01);
Abstract
A separator roll etc. capable of reducing meandering is provided. The separator roll includes a core and a battery separator wound around the core. The core has an axis hole along a central axis of the core. A value, obtained by dividing a difference between a diameter of the core and a diameter of the axis hole by a width of the core in a direction of the central axis, is not less than 0.3 and not more than 1.5.