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Press Molding Method And Press Molded Component

Abstract: The present invention addresses the problem of suppressing cracks during bending processing even in the case of a patchwork blank in which a relatively large patchwork is joined, and the objective thereof is to provide such a press-molding method. The present invention is a press-molding method for bending a patchwork blank obtained by overlaying a patchwork on the surface of a base blank. A press-formed component without cracks can be obtained by joining (spot welding) the patchwork and the base blank before press molding, only in one of two regions of the surface of the patchwork blank divided by the bent portion as a boundary in the case where there is one bent portion, and only in a region between two adjacent bent portions in the case where there are two or more bent portions, and, after press molding, joining (spot welding) the patchwork and the base blank in other regions.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
22 September 2025
Publication Number
48/2025
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application

Applicants

NIPPON STEEL CORPORATION
6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. KUBO, Masahiro
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
2. KIMOTO, Naoki
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
3. SHIRAKAMI, Satoshi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
4. YOSHIDA, Hiroshi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

# Name Date
1 202517090319-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [22-09-2025(online)].pdf 2025-09-22
2 202517090319-STATEMENT OF UNDERTAKING (FORM 3) [22-09-2025(online)].pdf 2025-09-22
3 202517090319-REQUEST FOR EXAMINATION (FORM-18) [22-09-2025(online)].pdf 2025-09-22
4 202517090319-PROOF OF RIGHT [22-09-2025(online)].pdf 2025-09-22
5 202517090319-PRIORITY DOCUMENTS [22-09-2025(online)].pdf 2025-09-22
6 202517090319-POWER OF AUTHORITY [22-09-2025(online)].pdf 2025-09-22
7 202517090319-FORM 18 [22-09-2025(online)].pdf 2025-09-22
8 202517090319-FORM 1 [22-09-2025(online)].pdf 2025-09-22
9 202517090319-DRAWINGS [22-09-2025(online)].pdf 2025-09-22
10 202517090319-DECLARATION OF INVENTORSHIP (FORM 5) [22-09-2025(online)].pdf 2025-09-22
11 202517090319-COMPLETE SPECIFICATION [22-09-2025(online)].pdf 2025-09-22