Granted Patent
B2
US 11,773,462 · App. 16/472,247 · Granted Oct 3, 2023
Annealing separator composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet
Inventors:
Min Serk Kwon (Pohang-si, KR); Chang Soo Park (Pohang-si, KR); Heon-Jo Choi (Pohang-si, KR); Se-Min Park (Pohang-si, KR)
Assignee:
POSCO CO., LTD
C21D9/46C04B35/185C04B35/62222C04B35/64C21D1/68C21D6/001C21D6/005C21D6/008C21D8/005C21D8/1272C22C38/001C22C38/008C22C38/02C22C38/04C22C38/06C22C38/08C04B2235/3206C04B2235/3232C04B2235/3262C04B2235/3279C04B2235/3293C04B2235/3294C04B2235/3409C04B2235/3463C04B2235/386C04B2235/3826C04B2235/447C04B2235/787C22C2202/02
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Abstract
The present invention provides an annealing separator composition, a grain-oriented electrical steel sheet and a method for manufacturing a grain-oriented electrical steel sheet. An annealing separator composition for a grain-oriented electrical steel sheet according to an embodiment of present invention comprising: on the basis of total solid 100 wt %, 5 to 70 wt % of mullite; and the remainder being magnesium oxide or magnesium hydroxide.
Claims (3)
1. An annealing separator composition for a grain-oriented electrical steel sheet comprising:
on the basis of total solid 100 wt %, 5 to 70 wt % of mullite; and
the remainder being magnesium oxide or magnesium hydroxide.
Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Oct 26, 2022
From: POSCO HOLDINGS INC.
To: POSCO CO., LTD
Reel/Frame 061774/0129 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 8, 2019
From: KWON, MIN SERK; PARK, CHANG SOO; PARK, SE-MIN
To: POSCO
Reel/Frame 049999/0258 →
Priority Claims (1)
KR 10-2016-0177070
· Dec 22, 2016
· national
Continuity (1)