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:
Jul. 22, 2025
Filed:
Dec. 01, 2020
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Yusuke Fujii, Tokyo, JP;
Masaki Urabe, Tokyo, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 22/26 (2006.01); B21D 22/20 (2006.01); B21D 24/04 (2006.01); B21D 53/88 (2006.01);
U.S. Cl.
CPC ...
B21D 22/26 (2013.01); B21D 22/20 (2013.01); B21D 24/04 (2013.01); B21D 53/88 (2013.01);
Abstract
A press forming method includes: press forming a press formed product including a top portion, a side wall portion continuous from the top portion through a punch shoulder portion, and a flange portion continuous from the side wall portion through a die shoulder portion, the press formed product including a curved portion that is concave and curved in a top view; and increasing a bending radius of the punch shoulder portion in the curved portion from a center of a curve toward an end side of the curve.