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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.:

US 12434327 B1

PDFFull Text
Date of Patent:
Oct. 07, 2025

Filed:

Jul. 21, 2022

Friction stir spot welded joint and production method therefor, and friction stir spot welding method

Applicants:

Jfe Steel Corporation, Tokyo, JP;

Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;

Inventors:

Daiki Yamagishi, Tokyo, JP;

Katsutoshi Takashima, Tokyo, JP;

Hiroshi Matsuda, Tokyo, JP;

Ryoji Ohashi, Kobe, JP;

Yoshitaka Muramatsu, Kobe, JP;

Takuya Fukuda, Kobe, JP;

Assignees:

JFE STEEL CORPORATION, Tokyo, JP;

KAWASAKI JUKOGYO KABUSHIKI KAISHA, Hyogo, JP;

Attorney:

KENJA IP LAW PC

Primary Examiner:

Adam Krupicka

Int. Cl.
CPC ...
B23K 20/12 (2006.01); B32B 7/05 (2019.01); B32B 15/01 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
B23K 20/1265 (2013.01); B23K 20/1225 (2013.01); B23K 20/1255 (2013.01); B32B 7/05 (2019.01); B32B 15/011 (2013.01); B23K 2103/04 (2018.08); B32B 2250/02 (2013.01); B32B 2311/30 (2013.01);
Abstract

Provided is a friction stir spot welded joint having high cross tensile strength even in the case where a steel sheet having a soft surface layer is used as a material to be welded. An annular groove is formed on an upper surface of an upper sheet out of overlapping steel sheets, and a shape and hardness of a welded portion are appropriately controlled simultaneously.

Find Patent Forward Citations

Yamagishi, Daiki. (2025). Friction stir spot welded joint and production method therefor, and friction stir spot welding method (U.S. Patent No. 12434327). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12434327

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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