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:
Nov. 18, 2025
Filed:
Sep. 29, 2020
Toyo Kohan Co., Ltd., Tokyo, JP;
Michio Kawamura, Kudamatsu, JP;
Shinichiro Horie, Kudamatsu, JP;
Etsuro Tsutsumi, Kudamatsu, JP;
Yuma Yoshizaki, Kudamatsu, JP;
Koh Yoshioka, Kudamatsu, JP;
TOYO KOHAN CO., LTD., Tokyo, JP;
Abstract
An electrolytic foil and a battery current collector is provided in which the risk of breakage or tearing during manufacturing presented by reduced thickness can be restrained, and which possess sufficient strength for repeated charging and discharging in a secondary battery. The electrolytic foil and the battery current collector contain a Ni—Fe alloy layer, having a thickness of 1.5 to 10 μm and having a first surface and a second surface and wherein the value of a three-dimensional surface properties parameter Sv divided by the thickness is equal to or less than 0.5 for the first surface and the second surface.