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:
Jul. 09, 2019
Filed:
May. 23, 2017
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Daizaburo Yashiki, Niihama, JP;
Takahiro Okugawa, Niihama, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 2/18 (2006.01); B32B 27/00 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); B32B 27/00 (2013.01); H01M 2/1653 (2013.01); H01M 2/18 (2013.01); H01M 10/0525 (2013.01);
Abstract
In the present invention, in laminated separator rollsU andL, laminated long separator sheetsandare wound such that a surface B (which is of an aramid layer (heat-resistant layer) and is opposite to a surface contacting with the porous film) faces an inner side (core u, l side). From this, it is possible to provide the laminated separator roll which can inhibit change in color of the porous layer included in the porous long separator sheet.