Grain Oriented Electromagnetic Steel Sheet And Method For Forming

Grain Oriented Electromagnetic Steel Sheet And Method For Forming Insulating Coating Film

Abstract: This grain-oriented electromagnetic steel sheet includes a parent material steel sheet and an insulating coating film that is formed on the surface of the parent material steel sheet. The insulating coating film includes an intermediate layer that includes a crystalline metal phosphate and is formed on the parent material steel sheet side and a tension coating film layer that is formed on the surface side of the insulating coating film. The porosity of the intermediate layer is less than 40%.

Patent Information

Application #

Filing Date

30 September 2025

Publication Number

44/2025

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	202517093949-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [30-09-2025(online)].pdf	2025-09-30
2	202517093949-STATEMENT OF UNDERTAKING (FORM 3) [30-09-2025(online)].pdf	2025-09-30
3	202517093949-REQUEST FOR EXAMINATION (FORM-18) [30-09-2025(online)].pdf	2025-09-30
4	202517093949-PROOF OF RIGHT [30-09-2025(online)].pdf	2025-09-30
5	202517093949-PRIORITY DOCUMENTS [30-09-2025(online)].pdf	2025-09-30
6	202517093949-POWER OF AUTHORITY [30-09-2025(online)].pdf	2025-09-30
7	202517093949-FORM 18 [30-09-2025(online)].pdf	2025-09-30
8	202517093949-FORM 1 [30-09-2025(online)].pdf	2025-09-30
9	202517093949-DRAWINGS [30-09-2025(online)].pdf	2025-09-30
10	202517093949-DECLARATION OF INVENTORSHIP (FORM 5) [30-09-2025(online)].pdf	2025-09-30
11	202517093949-COMPLETE SPECIFICATION [30-09-2025(online)].pdf	2025-09-30