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Grain Oriented Electrical Steel Sheet And Manufacturing Method Therefor
Abstract: A grain-oriented electrical steel sheet according to one embodiment of the present invention comprises, by wt%, 2.0-4.0% of Si, 0.04-0.2% of Mn, 0.010% or less of N (excluding 0%), 0.005% or less of C (excluding 0%), 0.03-0.08% of Sn and 0.01-0.2% of Cr, the balance of Fe and inevitable impurities, and inclusions comprising at least one from among AlN, (Al,Si)N, (Al,Si,Mn)N, MnS, CuS and Al2O3, wherein the average diameter of the inclusions is 0.5-6.0 µm, and 40-130/mm2 inclusions having a diameter of 6.0 µm or less from among the inclusions can be included.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
15 July 2023
Publication Number
36/2023
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2025-11-18
Renewal Date
Applicants
POSCO CO., LTD
6261, Donghaean-ro, Nam-gu,
Pohang-si,
Gyeongsangbuk-do 37859
Inventors
1. SONG, Daehyun
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
2. LEE, Sangwoo
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202337047741-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [15-07-2023(online)].pdf | 2023-07-15 |
| 2 | 202337047741-STATEMENT OF UNDERTAKING (FORM 3) [15-07-2023(online)].pdf | 2023-07-15 |
| 3 | 202337047741-REQUEST FOR EXAMINATION (FORM-18) [15-07-2023(online)].pdf | 2023-07-15 |
| 4 | 202337047741-PRIORITY DOCUMENTS [15-07-2023(online)].pdf | 2023-07-15 |
| 5 | 202337047741-POWER OF AUTHORITY [15-07-2023(online)].pdf | 2023-07-15 |
| 6 | 202337047741-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [15-07-2023(online)].pdf | 2023-07-15 |
| 7 | 202337047741-FORM 18 [15-07-2023(online)].pdf | 2023-07-15 |
| 8 | 202337047741-FORM 1 [15-07-2023(online)].pdf | 2023-07-15 |
| 9 | 202337047741-DRAWINGS [15-07-2023(online)].pdf | 2023-07-15 |
| 10 | 202337047741-DECLARATION OF INVENTORSHIP (FORM 5) [15-07-2023(online)].pdf | 2023-07-15 |
| 11 | 202337047741-COMPLETE SPECIFICATION [15-07-2023(online)].pdf | 2023-07-15 |
| 12 | 202337047741-Proof of Right [10-08-2023(online)].pdf | 2023-08-10 |
| 13 | 202337047741-FORM 3 [29-12-2023(online)].pdf | 2023-12-29 |
| 14 | 202337047741-FER.pdf | 2024-08-26 |
| 15 | 202337047741-FORM 3 [03-10-2024(online)].pdf | 2024-10-03 |
| 16 | 202337047741-OTHERS [19-02-2025(online)].pdf | 2025-02-19 |
| 17 | 202337047741-FER_SER_REPLY [19-02-2025(online)].pdf | 2025-02-19 |
| 18 | 202337047741-CLAIMS [19-02-2025(online)].pdf | 2025-02-19 |
| 19 | 202337047741-US(14)-HearingNotice-(HearingDate-28-10-2025).pdf | 2025-10-08 |
| 20 | 202337047741-Response to office action [13-10-2025(online)].pdf | 2025-10-13 |
| 21 | 202337047741-Correspondence to notify the Controller [25-10-2025(online)].pdf | 2025-10-25 |
| 22 | 202337047741-Written submissions and relevant documents [08-11-2025(online)].pdf | 2025-11-08 |
| 23 | 202337047741-FORM 3 [08-11-2025(online)].pdf | 2025-11-08 |
| 24 | 202337047741-PatentCertificate18-11-2025.pdf | 2025-11-18 |
| 25 | 202337047741-IntimationOfGrant18-11-2025.pdf | 2025-11-18 |
Search Strategy
| 1 | searchE_23-08-2024.pdf |