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. 25, 2025
Filed:
Apr. 27, 2021
Applicant:
Nippon Steel Corporation, Tokyo, JP;
Inventors:
Takuya Mitsunobu, Tokyo, JP;
Keitaro Matsuda, Tokyo, JP;
Jun Maki, Tokyo, JP;
Takehiro Takahashi, Tokyo, JP;
Hiroshi Takebayashi, Tokyo, JP;
Assignee:
NIPPON STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/00 (2006.01); B32B 7/14 (2006.01); B32B 15/01 (2006.01); B32B 37/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01);
U.S. Cl.
CPC ...
B32B 15/011 (2013.01); B32B 7/14 (2013.01); B32B 37/0084 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); B32B 2255/06 (2013.01); B32B 2255/205 (2013.01);
Abstract
A steel welded member comprising a plurality of Zn-based plated steel materials, each having a Zn-based plating layer on a surface of a steel material, joined together through at least one spot weld, wherein the steel material contains, by mass %, C: 0.05 to 0.40%, Si: 0.2 to 3.0%, and Mn: 0.1 to 5.0%, the steel welded member includes, by area ratio, 20 to 80% of a Γ phase (FeZn) and at least one oxide with a long axis of 0.5 μm or more in a region up to 0.5 mm from an end part of a pressure weld of the spot weld.