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Grain Oriented Electromagnetic Steel Sheet And Method For Producing Grain Oriented Electromagnetic Steel Sheet

Abstract: In this grain-oriented electromagnetic steel sheet, when measurement points of crystal orientation by x-ray diffraction are arranged at a 6-mm pitch in the rolling direction and the direction orthogonal to the rolling direction, respectively, the proportion of measurement points with an orientation difference of within 15° from [211]<011> to all measurement points is 5% or less. Oxygen intensity reduction regions are present periodically in an oxygen intensity profile of the surface of the primary coating film obtained by line analysis along the rolling direction by an electron beam microanalyzer, and the ratio Iomin/Iomax of the minimum oxygen intensity Iomin in an oxygen intensity reduction region and the maximum oxygen intensity Iomax of a region other than an oxygen intensity reduction region is 0.85-0.96 inclusive.

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Patent Information

Application #
Filing Date
30 September 2025
Publication Number
44/2025
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. ATSUMI Haruhiko
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
2. YAMAGATA Ryutaro
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. HIRAYAMA Takaaki
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
5. SAKAI Tatsuhiko
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

# Name Date
1 202517093961-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [30-09-2025(online)].pdf 2025-09-30
2 202517093961-STATEMENT OF UNDERTAKING (FORM 3) [30-09-2025(online)].pdf 2025-09-30
3 202517093961-REQUEST FOR EXAMINATION (FORM-18) [30-09-2025(online)].pdf 2025-09-30
4 202517093961-PROOF OF RIGHT [30-09-2025(online)].pdf 2025-09-30
5 202517093961-PRIORITY DOCUMENTS [30-09-2025(online)].pdf 2025-09-30
6 202517093961-POWER OF AUTHORITY [30-09-2025(online)].pdf 2025-09-30
7 202517093961-FORM 18 [30-09-2025(online)].pdf 2025-09-30
8 202517093961-FORM 1 [30-09-2025(online)].pdf 2025-09-30
9 202517093961-DRAWINGS [30-09-2025(online)].pdf 2025-09-30
10 202517093961-DECLARATION OF INVENTORSHIP (FORM 5) [30-09-2025(online)].pdf 2025-09-30
11 202517093961-COMPLETE SPECIFICATION [30-09-2025(online)].pdf 2025-09-30