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:
Oct. 10, 2023
Filed:
Nov. 09, 2018
Applicant:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Inventors:
Masato Murakami, Tokyo, JP;
Shintaro Inaba, Tokyo, JP;
Shinya Hisamitsu, Tokyo, JP;
Daisuke Inagaki, Tokyo, JP;
Hiroshi Hatayama, Tokyo, JP;
Assignee:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0525 (2010.01); H01M 50/417 (2021.01); H01M 50/491 (2021.01); H01M 50/489 (2021.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); H01M 50/417 (2021.01); H01M 50/491 (2021.01); H01M 50/489 (2021.01);
Abstract
A separator for electricity storage devices, which comprises a porous layer that contains a polyolefin resin and an ionic compound, and which is configured such that: the content of the ionic compound in the porous layer is from 5% by mass to 99% by mass (inclusive); and the degree of whiteness of this separator is more than 98.0.