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:
Sep. 17, 2019
Filed:
Jul. 22, 2015
Nippon Steel Corporation, Tokyo, JP;
Nippon Steel Chemical & Material Co., Ltd., Tokyo, JP;
Masaharu Ibaragi, Kisarazu, JP;
Koichi Nose, Chiba, JP;
Kiyokazu Ishizuka, Himeji, JP;
Yasuto Goto, Kimitsu, JP;
Shuji Nagasaki, Sagamihara, JP;
Hiroto Unno, Yokohama, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., Tokyo, JP;
Abstract
A steel foil for a power storage device container includes a rolled steel foil which has a thickness of 200 μm or less, a diffusion alloy layer which is formed on a surface layer of the rolled steel foil and contains Ni and Fe, and a chromium-based surface treatment layer which is formed on the diffusion alloy layer. The <111> polar density in a reverse pole figure of the diffusion alloy layer in a rolling direction is 2.0 to 6.0, and the aspect ratio of crystal in a surface of the diffusion alloy layer is 1.0 to 5.0.