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Non Oriented Electrical Steel Sheet And Method For Preparing Same
Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention comprises, in weight %, 2.5-6.0% of Si, 0.2-3.5% of Al, 0.2-4.5% of Mn, 0.01-0.2% of Cr, 0.005-0.08% of P and 0.0005-0.05% of Mg, and the remainder being Fe and unavoidable impurities, satisfies following formula [1], and has an inner oxide layer having a thickness of 0.2-5 µm formed inside a base steel sheet. Formula [1]: -2.5 = [P] / [Cr] - [Mg] x 100 = 6.5 (In formula [1], [P], [Cr] and [Mg] indicate the content (weight %) of P, Cr and Mg, respectively.)
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
20 July 2020
Publication Number
40/2020
Publication Type
INA
Invention Field
METALLURGY
Status
Email
durgesh@knspartners.com
Parent Application
Patent Number
Legal Status
Grant Date
2024-05-29
Renewal Date
Applicants
POSCO
(Goedong-dong)
6261, Donghaean-ro, Nam-gu
Pohang-si,
Gyeongsangbuk-do 37859
Inventors
1. KIM, Jae-Hoon
c/o POSCO, (Goedong-dong)
6261, Donghaean-ro, Nam-gu
Pohang-si
Gyeongsangbuk-do 37859
2. KIM, Yong-Soo
c/o POSCO, (Goedong-dong)
6261, Donghaean-ro, Nam-gu
Pohang-si
Gyeongsangbuk-do 37859
3. KIM, Jung-Woo
c/o POSCO, (Goedong-dong)
6261, Donghaean-ro, Nam-gu
Pohang-si
Gyeongsangbuk-do 37859
4. SHIN, Su-Yong
c/o POSCO, (Goedong-dong)
6261, Donghaean-ro, Nam-gu,
Pohang-si
Gyeongsangbuk-do 37859
Specification
Documents
Orders
| Section | Controller | Decision Date |
|---|---|---|
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202047030837-IntimationOfGrant29-05-2024.pdf | 2024-05-29 |
| 1 | 202047030837.pdf | 2020-07-20 |
| 2 | 202047030837-PatentCertificate29-05-2024.pdf | 2024-05-29 |
| 2 | 202047030837-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [20-07-2020(online)].pdf | 2020-07-20 |
| 3 | 202047030837-STATEMENT OF UNDERTAKING (FORM 3) [20-07-2020(online)].pdf | 2020-07-20 |
| 3 | 202047030837-PETITION UNDER RULE 137 [01-05-2024(online)].pdf | 2024-05-01 |
| 4 | 202047030837-Written submissions and relevant documents [01-05-2024(online)].pdf | 2024-05-01 |
| 4 | 202047030837-REQUEST FOR EXAMINATION (FORM-18) [20-07-2020(online)].pdf | 2020-07-20 |
| 5 | 202047030837-Proof of Right [20-07-2020(online)].pdf | 2020-07-20 |
| 5 | 202047030837-Correspondence to notify the Controller [23-04-2024(online)].pdf | 2024-04-23 |
| 6 | 202047030837-FORM-26 [23-04-2024(online)].pdf | 2024-04-23 |
| 6 | 202047030837-FORM-26 [20-07-2020(online)].pdf | 2020-07-20 |
| 7 | 202047030837-US(14)-HearingNotice-(HearingDate-24-04-2024).pdf | 2024-04-10 |
| 7 | 202047030837-FORM 18 [20-07-2020(online)].pdf | 2020-07-20 |
| 8 | 202047030837-FORM 1 [20-07-2020(online)].pdf | 2020-07-20 |
| 8 | 202047030837 Reply from DAE.pdf | 2024-04-08 |
| 9 | 202047030837-ABSTRACT [15-06-2022(online)].pdf | 2022-06-15 |
| 9 | 202047030837-DRAWINGS [20-07-2020(online)].pdf | 2020-07-20 |
| 10 | 202047030837-CLAIMS [15-06-2022(online)].pdf | 2022-06-15 |
| 10 | 202047030837-DECLARATION OF INVENTORSHIP (FORM 5) [20-07-2020(online)].pdf | 2020-07-20 |
| 11 | 202047030837-COMPLETE SPECIFICATION [15-06-2022(online)].pdf | 2022-06-15 |
| 11 | 202047030837-COMPLETE SPECIFICATION [20-07-2020(online)].pdf | 2020-07-20 |
| 12 | 202047030837-certified copy of translation [20-07-2020(online)].pdf | 2020-07-20 |
| 12 | 202047030837-DRAWING [15-06-2022(online)].pdf | 2022-06-15 |
| 13 | 202047030837-FER_SER_REPLY [15-06-2022(online)].pdf | 2022-06-15 |
| 13 | 202047030837-FORM 3 [20-10-2020(online)].pdf | 2020-10-20 |
| 14 | 202047030837 Correspondence by Office_Atomic_02-12-2021.pdf | 2021-12-02 |
| 14 | 202047030837-FORM 3 [15-06-2022(online)]-1.pdf | 2022-06-15 |
| 15 | 202047030837-FER.pdf | 2021-12-16 |
| 15 | 202047030837-FORM 3 [15-06-2022(online)].pdf | 2022-06-15 |
| 16 | 202047030837-Information under section 8(2) [15-06-2022(online)].pdf | 2022-06-15 |
| 16 | 202047030837-OTHERS [15-06-2022(online)].pdf | 2022-06-15 |
| 17 | 202047030837-OTHERS [15-06-2022(online)].pdf | 2022-06-15 |
| 17 | 202047030837-Information under section 8(2) [15-06-2022(online)].pdf | 2022-06-15 |
| 18 | 202047030837-FER.pdf | 2021-12-16 |
| 18 | 202047030837-FORM 3 [15-06-2022(online)].pdf | 2022-06-15 |
| 19 | 202047030837 Correspondence by Office_Atomic_02-12-2021.pdf | 2021-12-02 |
| 19 | 202047030837-FORM 3 [15-06-2022(online)]-1.pdf | 2022-06-15 |
| 20 | 202047030837-FER_SER_REPLY [15-06-2022(online)].pdf | 2022-06-15 |
| 20 | 202047030837-FORM 3 [20-10-2020(online)].pdf | 2020-10-20 |
| 21 | 202047030837-certified copy of translation [20-07-2020(online)].pdf | 2020-07-20 |
| 21 | 202047030837-DRAWING [15-06-2022(online)].pdf | 2022-06-15 |
| 22 | 202047030837-COMPLETE SPECIFICATION [15-06-2022(online)].pdf | 2022-06-15 |
| 22 | 202047030837-COMPLETE SPECIFICATION [20-07-2020(online)].pdf | 2020-07-20 |
| 23 | 202047030837-CLAIMS [15-06-2022(online)].pdf | 2022-06-15 |
| 23 | 202047030837-DECLARATION OF INVENTORSHIP (FORM 5) [20-07-2020(online)].pdf | 2020-07-20 |
| 24 | 202047030837-DRAWINGS [20-07-2020(online)].pdf | 2020-07-20 |
| 24 | 202047030837-ABSTRACT [15-06-2022(online)].pdf | 2022-06-15 |
| 25 | 202047030837-FORM 1 [20-07-2020(online)].pdf | 2020-07-20 |
| 25 | 202047030837 Reply from DAE.pdf | 2024-04-08 |
| 26 | 202047030837-US(14)-HearingNotice-(HearingDate-24-04-2024).pdf | 2024-04-10 |
| 26 | 202047030837-FORM 18 [20-07-2020(online)].pdf | 2020-07-20 |
| 27 | 202047030837-FORM-26 [23-04-2024(online)].pdf | 2024-04-23 |
| 27 | 202047030837-FORM-26 [20-07-2020(online)].pdf | 2020-07-20 |
| 28 | 202047030837-Proof of Right [20-07-2020(online)].pdf | 2020-07-20 |
| 28 | 202047030837-Correspondence to notify the Controller [23-04-2024(online)].pdf | 2024-04-23 |
| 29 | 202047030837-Written submissions and relevant documents [01-05-2024(online)].pdf | 2024-05-01 |
| 29 | 202047030837-REQUEST FOR EXAMINATION (FORM-18) [20-07-2020(online)].pdf | 2020-07-20 |
| 30 | 202047030837-STATEMENT OF UNDERTAKING (FORM 3) [20-07-2020(online)].pdf | 2020-07-20 |
| 30 | 202047030837-PETITION UNDER RULE 137 [01-05-2024(online)].pdf | 2024-05-01 |
| 31 | 202047030837-PatentCertificate29-05-2024.pdf | 2024-05-29 |
| 31 | 202047030837-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [20-07-2020(online)].pdf | 2020-07-20 |
| 32 | 202047030837-IntimationOfGrant29-05-2024.pdf | 2024-05-29 |
| 32 | 202047030837.pdf | 2020-07-20 |
Search Strategy
| 1 | 398SSME_16-11-2021.pdf |