Steel Sheet And Manufacturing Method Therefor

Abstract: The present invention relates to a steel sheet and a manufacturing method therefor, and, more specifically, to a high-strength cold-rolled steel sheet having excellent ductility and hole-expandability, and a manufacturing method therefor.

Patent Information

Application #

Filing Date

03 July 2025

Publication Number

29/2025

Publication Type

INA

Invention Field

METALLURGY

Status

Email

Parent Application

Applicants

POSCO CO., LTD

6261, Donghaean-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37859

Inventors

1. HYUN, Cheol-Seung

20-26, Pokposarang-gil Gwangyang-si, Jeollanam-do 57807

2. AHN, Yeon-Sang

20-26, Pokposarang-gil Gwangyang-si, Jeollanam-do 57807

3. CHOI, Kang-Hyun

20-26, Pokposarang-gil Gwangyang-si, Jeollanam-do 57807

Specification

Documents

Application Documents

#	Name	Date
1	202517063677-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [03-07-2025(online)].pdf	2025-07-03
2	202517063677-STATEMENT OF UNDERTAKING (FORM 3) [03-07-2025(online)].pdf	2025-07-03
3	202517063677-REQUEST FOR EXAMINATION (FORM-18) [03-07-2025(online)].pdf	2025-07-03
4	202517063677-PROOF OF RIGHT [03-07-2025(online)].pdf	2025-07-03
5	202517063677-PRIORITY DOCUMENTS [03-07-2025(online)].pdf	2025-07-03
6	202517063677-POWER OF AUTHORITY [03-07-2025(online)].pdf	2025-07-03
7	202517063677-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [03-07-2025(online)].pdf	2025-07-03
8	202517063677-FORM 18 [03-07-2025(online)].pdf	2025-07-03
9	202517063677-FORM 1 [03-07-2025(online)].pdf	2025-07-03
10	202517063677-FIGURE OF ABSTRACT [03-07-2025(online)].pdf	2025-07-03
11	202517063677-DRAWINGS [03-07-2025(online)].pdf	2025-07-03
12	202517063677-DECLARATION OF INVENTORSHIP (FORM 5) [03-07-2025(online)].pdf	2025-07-03
13	202517063677-COMPLETE SPECIFICATION [03-07-2025(online)].pdf	2025-07-03
14	202517063677-FORM-26 [30-09-2025(online)].pdf	2025-09-30