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. 20, 2026
Filed:
Jun. 08, 2021
Jfe Steel Corporation, Tokyo, JP;
Yuichi Matsuki, Tokyo, JP;
Kinya Nakagawa, Tokyo, JP;
Toyohisa Shinmiya, Tokyo, JP;
Yuji Yamasaki, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A shearing work technology of metal sheets, such as high-strength steel sheets, is excellent in stretch flange crack resistance and delayed fracture resistance of the sheared end surface. A metal sheet shearing work method including: applying double shearing work to an end portion of at least one part of the metal sheet; and forming a first area having a cutting margin of a second shearing work of 5 mm or less in first cutting in the double shearing work. Second cutting in the double shearing work is carried out in a state where the movement on an end portion side of the first area is restrained. For example, by providing projection areas continuous to the first area and restraining the projection areas, the movement on the end portion side of the first area is restrained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile