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. 01, 2024
Filed:
Mar. 04, 2022
Nippon Steel Corporation, Tokyo, JP;
Shinichi Yamaguchi, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
Surface-treated steel including a steel sheet; a plated layer including zinc formed on the steel sheet; and a film formed on the plated layer, the film having a thickness of 100 nm or more and 1000 nm or less, and including an amorphous phase A containing Si, C, O, P, Zn, and V, and one or more selected from the group consisting of Ti, Zr, and Al as constituent elements, with a Zn/Si ratio of peak intensity between Zn and Si, is 1.0 or more, and a mass ratio between V and P, V/P is 0.050 to 1.000 when analyzed by EDS; and an amorphous phase B containing Si, O, and Zn, having a Zn/Si ratio of less than 1.0, and Zn content of the amorphous phase A is 10 mass % or less, when analyzed by EDS.