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. 01, 2015
Filed:
Mar. 31, 2009
Applicants:
Yasuhiro Wakizaka, Kanagawaken, JP;
Mayumi Fukumine, Kanagawa-ken, JP;
Inventors:
Yasuhiro Wakizaka, Kanagawaken, JP;
Mayumi Fukumine, Kanagawa-ken, JP;
Assignee:
ZEON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 10/0525 (2010.01); H01G 9/02 (2006.01); H01G 11/38 (2013.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
H01G 9/02 (2013.01); C08J 5/18 (2013.01); H01G 11/38 (2013.01); H01M 2/166 (2013.01); H01M 2/168 (2013.01); H01M 2/1646 (2013.01); H01M 10/0525 (2013.01); C08J 2301/02 (2013.01); Y02E 60/122 (2013.01);
Abstract
Provided is a porous film that can contribute to improving the cycle characteristics of an electric cell by improving binding characteristics, for a porous film provided on a surface of an electrode used in a secondary cell and the like. The porous film comprises a water-soluble polymer, an inorganic filler, and a water-insoluble particulate polymer including 0.5-40 mass % of a monomer unit having a hydrophilic group selected from the group consisting of carboxylic acid groups, hydroxyl groups, and sulfonate groups.