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:
Jan. 02, 2024
Filed:
Apr. 08, 2022
Japan Vilene Company, Ltd., Tokyo, JP;
Hiroki Cho, Ibaraki, JP;
Yoshinori Sato, Ibaraki, JP;
Ayuka Noguchi, Ibaraki, JP;
Akihiko Kawano, Ibaraki, JP;
Masanao Tanaka, Ibaraki, JP;
Yasuhiro Ito, Tokyo, JP;
JAPAN VILENE COMPANY, LTD., Tokyo, JP;
Abstract
Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 μm<Dmax<18 μm, and 0 μm≤(Dmax−Dave)<13 μm, wherein Dmax is a maximum pore diameter (μm) of the fibrous structure, and Dave is an average pore diameter (μm) of the fibrous structure.