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. 21, 2019
Filed:
Apr. 03, 2015
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventor:
Junji Suzuki, Niihama, JP;
Assignee:
SUMITOMO CHEMCIAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/82 (2006.01); H01M 2/14 (2006.01); H01M 2/16 (2006.01); H01M 10/42 (2006.01); B32B 37/14 (2006.01); B32B 38/00 (2006.01); B32B 43/00 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 2/145 (2013.01); B32B 37/14 (2013.01); B32B 38/0004 (2013.01); B32B 43/003 (2013.01); H01M 2/166 (2013.01); H01M 2/1646 (2013.01); H01M 2/1686 (2013.01); H01M 10/4235 (2013.01); B32B 2457/00 (2013.01); B32B 2457/10 (2013.01); H01M 10/052 (2013.01);
Abstract
A method is provided for producing a separator by cutting a laminated porous film. The laminated porous film includes a porous base material layer containing polyolefin as a main component and a filler layer containing inorganic particles as a main component. The filler layer is provided on one surface of the porous base material layer; and a resin layer containing resin particles as a main component is provided on the other surface of the porous base material layer. The method includes a step of cutting, using a slit blade, the laminated porous film from the one surface on which the filler layer is provided.