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Electrical Steel Sheet Laminate
Abstract: The present invention relates to an electrical steel sheet laminate, and provided is an electrical steel sheet laminate comprising: a plurality of electrical steel sheets; and polymer adhesive layers positioned between the electrical steel sheets, wherein the coating thickness of the polymer adhesive layers is 1.8-5.4 µm, the space factor of the laminate is 95.8-98.5%, and the following mathematical formula 1 is satisfied. [Mathematical formula 1] 172.4 = space factor (%) × thickness (µm) = 531
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
13 July 2023
Publication Number
40/2023
Publication Type
INA
Invention Field
POLYMER TECHNOLOGY
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2025-10-13
Renewal Date
Applicants
POSCO CO., LTD
6261, Donghaean-ro, Nam-gu,
Pohang-si,
Gyeongsangbuk-do 37859
Inventors
1. KIM, Jungwoo
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
2. HA, Bongwoo
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
3. LEE, Donggyu
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
4. NO, Taeyoung
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
5. PARK, Gyeongryeol
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202337047173-STATEMENT OF UNDERTAKING (FORM 3) [13-07-2023(online)].pdf | 2023-07-13 |
| 2 | 202337047173-REQUEST FOR EXAMINATION (FORM-18) [13-07-2023(online)].pdf | 2023-07-13 |
| 3 | 202337047173-PRIORITY DOCUMENTS [13-07-2023(online)].pdf | 2023-07-13 |
| 4 | 202337047173-FORM 18 [13-07-2023(online)].pdf | 2023-07-13 |
| 5 | 202337047173-FORM 1 [13-07-2023(online)].pdf | 2023-07-13 |
| 6 | 202337047173-DRAWINGS [13-07-2023(online)].pdf | 2023-07-13 |
| 7 | 202337047173-DECLARATION OF INVENTORSHIP (FORM 5) [13-07-2023(online)].pdf | 2023-07-13 |
| 8 | 202337047173-COMPLETE SPECIFICATION [13-07-2023(online)].pdf | 2023-07-13 |
| 9 | 202337047173-FORM-26 [10-08-2023(online)].pdf | 2023-08-10 |
| 10 | 202337047173-Proof of Right [11-08-2023(online)].pdf | 2023-08-11 |
| 11 | 202337047173-FORM 3 [09-11-2023(online)].pdf | 2023-11-09 |
| 12 | 202337047173-certified copy of translation [05-02-2024(online)].pdf | 2024-02-05 |
| 13 | 202337047173-FER.pdf | 2024-11-06 |
| 14 | 202337047173-FORM 3 [12-12-2024(online)].pdf | 2024-12-12 |
| 15 | 202337047173-FER_SER_REPLY [03-05-2025(online)].pdf | 2025-05-03 |
| 16 | 202337047173-CLAIMS [03-05-2025(online)].pdf | 2025-05-03 |
| 17 | 202337047173-US(14)-HearingNotice-(HearingDate-25-07-2025).pdf | 2025-07-09 |
| 18 | 202337047173-Response to office action [10-07-2025(online)].pdf | 2025-07-10 |
| 19 | 202337047173-Correspondence to notify the Controller [21-07-2025(online)].pdf | 2025-07-21 |
| 20 | 202337047173-Written submissions and relevant documents [05-08-2025(online)].pdf | 2025-08-05 |
| 21 | 202337047173-PatentCertificate13-10-2025.pdf | 2025-10-13 |
| 22 | 202337047173-IntimationOfGrant13-10-2025.pdf | 2025-10-13 |
Search Strategy
| 1 | searchE_30-09-2024.pdf |