IP Library › Granted Patent US 11,772,189
Granted Patent B2
US 11,772,189 · App. 16/957,932 · Granted Oct 3, 2023

Grain-oriented electrical steel sheet and magnetic domain refining method therefor

Inventors: Se-Min Park (Pohang-si, KR); Jae Soo Kim (Pohang-si, KR); Ki-Young Min (Pohang-si, KR); Seong-Cheol Hong (Pohang-si, KR); Won-Gul Lee (Pohang-si, KR)
Assignee: POSCO CO., LTD
B23K26/0006B23K26/356B23K26/364B23K2103/04
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,772,189
App. No.
16/957,932
Granted
Oct 3, 2023
Kind
B2
Abstract

A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: a groove on a line formed on one surface of an electrical steel sheet in a direction crossing a rolling direction; and a thermal shock portion on a line formed on one surface of the electrical steel sheet in the direction crossing the rolling direction, wherein a distance between the groove and the thermal shock portion is 1 mm or less.

Claims (6)

1. A grain-oriented electrical steel sheet, comprising:

a groove on a line formed on one surface of an electrical steel sheet in a direction crossing a rolling direction; and

a thermal shock portion on a line formed on one surface of the electrical steel sheet in the direction crossing the rolling direction,

wherein a distance between the groove and the thermal shock portion is 1 mm or less, and

wherein a plurality of the thermal shock portions are formed, and a distance between the thermal shock portions is 2 to 5 times the distance between the grooves.

2. The grain-oriented electrical steel sheet of claim 1 , wherein a plurality of grooves are formed, and a distance between the grooves is 1.5 to 10 mm.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2022
From: POSCO HOLDINGS INC.
To: POSCO CO., LTD
Reel/Frame 061774/0129 →
CHANGE OF NAME Recorded Sep 28, 2022
From: POSCO
To: POSCO HOLDINGS INC.
Reel/Frame 061561/0705 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 24, 2020
From: PARK, SE-MIN; KIM, JAE SOO; MIN, KI-YOUNG; HONG, SEONG-CHEOL; LEE, WON-GUL
To: POSCO
Reel/Frame 053301/0468 →
Priority Claims (1)
KR 10-2017-0179924 · Dec 26, 2017 · national
Continuity (1)
Related Publication 20210060694A1 · Mar 4, 2021