Grain Oriented Electrical Steel Sheet

Abstract: In this grain-oriented electrical steel sheet, a plurality of grooves extending in a direction angled 60-120° with respect to the rolling direction are formed on the surface of a base steel sheet at intervals of 2-10 mm in the rolling direction. At the bottom portion of each groove, Ra is 5.0 µm or less and the absolute value of Rsk is 2.0 or less along the extending direction of the groove.

Patent Information

Application #

Filing Date

15 May 2025

Publication Number

23/2025

Publication Type

INA

Invention Field

METALLURGY

Status

Email

Parent Application

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. WADA Naoki

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

2. IWAKI Masataka

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

3. TAKAHASHI Masaru

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

4. HAMAMURA Hideyuki

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

#	Name	Date
1	202517046997-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [15-05-2025(online)].pdf	2025-05-15
2	202517046997-STATEMENT OF UNDERTAKING (FORM 3) [15-05-2025(online)].pdf	2025-05-15
3	202517046997-REQUEST FOR EXAMINATION (FORM-18) [15-05-2025(online)].pdf	2025-05-15
4	202517046997-PROOF OF RIGHT [15-05-2025(online)].pdf	2025-05-15
5	202517046997-PRIORITY DOCUMENTS [15-05-2025(online)].pdf	2025-05-15
6	202517046997-POWER OF AUTHORITY [15-05-2025(online)].pdf	2025-05-15
7	202517046997-FORM 18 [15-05-2025(online)].pdf	2025-05-15
8	202517046997-FORM 1 [15-05-2025(online)].pdf	2025-05-15
9	202517046997-DRAWINGS [15-05-2025(online)].pdf	2025-05-15
10	202517046997-DECLARATION OF INVENTORSHIP (FORM 5) [15-05-2025(online)].pdf	2025-05-15
11	202517046997-COMPLETE SPECIFICATION [15-05-2025(online)].pdf	2025-05-15
12	202517046997-FORM 3 [14-10-2025(online)].pdf	2025-10-14