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:
Jul. 07, 2026
Filed:
Mar. 28, 2022
Applicant:
Nippon Steel Corporation, Tokyo, JP;
Inventors:
Yasuo Ohsugi, Tokyo, JP;
Rei Honma, Tokyo, JP;
Assignee:
NIPPON STEEL CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/276 (2022.01);
U.S. Cl.
CPC ...
H02K 1/276 (2013.01);
Abstract
A rotor core has plural holes including holes in which permanent magnets are installed, the rotor core including: a high permeability portion; and a low permeability portion having a relative permeability that is smaller than a relative permeability of the high permeability portion and that is greater than a relative permeability of a vacuum, wherein an entirety of an inner peripheral bridge portion, at least part of a region of which is disposed at an inner peripheral surface side of the rotor core relative to at least one of regions where the permanent magnets are installed, is the low permeability portion.