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Grain Oriented Electrical Steel Sheet And Method For Forming Insulating Coating Film
Abstract: This grain-oriented electrical steel sheet has a base steel sheet and an insulating coating film that is formed on the surface of the base steel sheet. The insulating coating film has: an intermediate layer that is formed on the base steel sheet side and contains a crystalline metal phosphate salt and at least one of amorphous silica, an inorganic filler, and a metal oxide; and a tension coating layer that is formed on the surface side of the insulating coating film. The average particle diameter of the at least one of the amorphous silica, the inorganic filler, and the metal oxide is 10-500 nm.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
26 September 2025
Publication Number
43/2025
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
Parent Application
Applicants
NIPPON STEEL CORPORATION
6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
Inventors
1. TAKEDA Kazutoshi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
2. TAKATANI Shinsuke
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
3. KATAOKA Takashi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
4. KOGAKURA Yuuki
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202517092566-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [26-09-2025(online)].pdf | 2025-09-26 |
| 2 | 202517092566-STATEMENT OF UNDERTAKING (FORM 3) [26-09-2025(online)].pdf | 2025-09-26 |
| 3 | 202517092566-REQUEST FOR EXAMINATION (FORM-18) [26-09-2025(online)].pdf | 2025-09-26 |
| 4 | 202517092566-PROOF OF RIGHT [26-09-2025(online)].pdf | 2025-09-26 |
| 5 | 202517092566-PRIORITY DOCUMENTS [26-09-2025(online)].pdf | 2025-09-26 |
| 6 | 202517092566-POWER OF AUTHORITY [26-09-2025(online)].pdf | 2025-09-26 |
| 7 | 202517092566-FORM 18 [26-09-2025(online)].pdf | 2025-09-26 |
| 8 | 202517092566-FORM 1 [26-09-2025(online)].pdf | 2025-09-26 |
| 9 | 202517092566-DRAWINGS [26-09-2025(online)].pdf | 2025-09-26 |
| 10 | 202517092566-DECLARATION OF INVENTORSHIP (FORM 5) [26-09-2025(online)].pdf | 2025-09-26 |
| 11 | 202517092566-COMPLETE SPECIFICATION [26-09-2025(online)].pdf | 2025-09-26 |