Panel

Abstract: There is provided a panel including a steel plate that has a metal structure containing martensite, wherein the surface property aspect ratio Str of the steel plate in a flat part in a center-side portion of the panel is 0.50 to 1.00, and the surface roughness parameter Sa of the steel plate in an end part and the flat part in the center-side portion of the panel is 0.50 µm or below.

Patent Information

Application #

Filing Date

10 December 2025

Publication Number

52/2025

Publication Type

INA

Invention Field

METALLURGY

Status

Email

Parent Application

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. NAGANO, Mai

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

2. SAWA, Yasunori

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

3. NISHIMURA, Ryuichi

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

4. HIRONAKA, Satoshi

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

Specification

Documents

Application Documents

#	Name	Date
1	202517124742-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [10-12-2025(online)].pdf	2025-12-10
2	202517124742-STATEMENT OF UNDERTAKING (FORM 3) [10-12-2025(online)].pdf	2025-12-10
3	202517124742-REQUEST FOR EXAMINATION (FORM-18) [10-12-2025(online)].pdf	2025-12-10
4	202517124742-PROOF OF RIGHT [10-12-2025(online)].pdf	2025-12-10
5	202517124742-PRIORITY DOCUMENTS [10-12-2025(online)].pdf	2025-12-10
6	202517124742-POWER OF AUTHORITY [10-12-2025(online)].pdf	2025-12-10
7	202517124742-FORM 18 [10-12-2025(online)].pdf	2025-12-10
8	202517124742-FORM 1 [10-12-2025(online)].pdf	2025-12-10
9	202517124742-DECLARATION OF INVENTORSHIP (FORM 5) [10-12-2025(online)].pdf	2025-12-10
10	202517124742-COMPLETE SPECIFICATION [10-12-2025(online)].pdf	2025-12-10
11	202517124742-MARKED COPIES OF AMENDEMENTS [30-12-2025(online)].pdf	2025-12-30
12	202517124742-FORM 13 [30-12-2025(online)].pdf	2025-12-30
13	202517124742-AMMENDED DOCUMENTS [30-12-2025(online)].pdf	2025-12-30