The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2025
Filed:
May. 15, 2020
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Souichiro Yoshizaki, Tokyo, JP;
Kunihiro Senda, Tokyo, JP;
Yoshiaki Zaizen, Tokyo, JP;
Yukino Miyamoto, Tokyo, JP;
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 15/02 (2006.01); H02K 1/02 (2006.01); H02K 1/04 (2006.01);
U.S. Cl.
CPC ...
H02K 15/02 (2013.01); H02K 1/02 (2013.01); H02K 1/04 (2013.01); Y10T 29/49009 (2015.01);
Abstract
A method for manufacturing a motor core includes a step of manufacturing a motor core by performing melt-cutting on an electrical steel sheet using heat input from a surface, the electrical steel sheet having an average thermal conductivity in depth positions from the surface to one-third depth of a sheet thickness lower than a thermal conductivity in a middle position in a sheet thickness direction by 30% or greater.