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:
Aug. 01, 2017
Filed:
Dec. 20, 2012
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Toyoda Iron Works Co., Ltd., Aichi, JP;
Masahiro Nakata, Tokyo, JP;
Toshiya Suzuki, Tokyo, JP;
Tomokichi Tokuda, Tokyo, JP;
Masanobu Ichikawa, Aichi, JP;
Nobuyuki Ichimaru, Aichi, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
TOYODA IRON WORKS CO., LTD., Aichi, JP;
Abstract
A press-formed product includes a body having a transverse cross section including a bottom portion and a shoulder portion contiguous to the bottom portion through an R end. In the transverse cross section, a first region from the R end to a position a distance away in a bottom portion extending direction, and a second region which is part of the bottom portion and is contiguous to the first region have a work-hardening distribution introduced by press-forming. The work-hardening distribution has an average hardness Hv1 of an area of the first region from a steel sheet surface to a depth obtained by multiplying a steel sheet thickness by 0.2 and an average hardness Hv2 of an area of the second region from the steel sheet surface to a position obtained by multiplying the steel sheet thickness by 0.2 to satisfy a relationship of Hv1>1.05×Hv2.