Grain Oriented Electrical Steel Sheet And Method For Refining Magnetic

Grain Oriented Electrical Steel Sheet And Method For Refining Magnetic Domains Thereof

Abstract: According to one embodiment of the present invention, a method for refining magnetic domains of a grain-oriented steel sheet comprises a step of forming grooves by overlapping and emitting beam spots of two or more types of lasers having different beam spot shapes.

Patent Information

Application #

Filing Date

20 March 2026

Publication Number

13/2026

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. KWON, Ohyeoul

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

2. KIM, Woosin

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

3. KIM, Jungwoo

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

Specification

Documents

Application Documents

#	Name	Date
1	202647033743-TRANSLATION OF PRIORITY DOCUMENTS ETC. [20-03-2026(online)].pdf	2026-03-20
2	202647033743-STATEMENT OF UNDERTAKING (FORM 3) [20-03-2026(online)].pdf	2026-03-20
3	202647033743-PROOF OF RIGHT [20-03-2026(online)].pdf	2026-03-20
4	202647033743-PRIORITY DOCUMENTS [20-03-2026(online)].pdf	2026-03-20
5	202647033743-POWER OF AUTHORITY [20-03-2026(online)].pdf	2026-03-20
6	202647033743-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [20-03-2026(online)].pdf	2026-03-20
7	202647033743-FORM 18 [20-03-2026(online)].pdf	2026-03-20
8	202647033743-FORM 1 [20-03-2026(online)].pdf	2026-03-20
9	202647033743-DRAWINGS [20-03-2026(online)].pdf	2026-03-20
10	202647033743-DECLARATION OF INVENTORSHIP (FORM 5) [20-03-2026(online)].pdf	2026-03-20
11	202647033743-COMPLETE SPECIFICATION [20-03-2026(online)].pdf	2026-03-20
12	202647033743-PATENT_APPLICATION_PUBLICATION.pdf	2026-04-06
13	202647033743-FORM 3 [04-05-2026(online)].pdf	2026-05-04