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. 28, 2020
Filed:
Feb. 23, 2017
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Jun Hagiwara, Tokyo, JP;
Fumitaka Baba, Tokyo, JP;
Makoto Iwasaki, Tokyo, JP;
Satoshi Koga, Tokyo, JP;
Assignee:
TDK CORPORATION, Minato-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/00 (2006.01); H01F 7/02 (2006.01); H02K 1/04 (2006.01);
U.S. Cl.
CPC ...
H01F 7/021 (2013.01); H02K 1/04 (2013.01);
Abstract
A rare earth magnet capable of reducing an eddy current loss by virtue of a low-cost, simple configuration, when mounted in a motor, is to be provided. The rare earth magnet can include a magnet body that includes a rare earth element and iron; and a resistive layer formed on at least one surface of the magnet body, the resistive layer comprising a rare earth element, iron, and oxygen and having an average volume resistivity of 10Ωcm or more and a thickness of from 3 to 25 μm.