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.

Date of Patent:
Mar. 27, 2018

Filed:

Jun. 27, 2013
Applicant:

Makoto Kitahara, Toyota, JP;

Inventor:

Makoto Kitahara, Toyota, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/03 (2006.01); H01F 41/02 (2006.01); H01F 7/02 (2006.01); H01F 1/057 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0293 (2013.01); H01F 7/02 (2013.01); H01F 41/0253 (2013.01); H01F 1/0577 (2013.01);
Abstract

In permanent magnets formed by division, a cut-out part is provided in a straight line in the matrix of the permanent magnets, a metal increasing the coercive force the permanent magnet matrix is diffused into the interior of the matrix from a surface that includes the surface of the cut-out part of the permanent magnet matrix, and the permanent magnet matrix is divided into multiple permanent magnet parts along the straight cut-out part to form the permanent magnets. An Nd—Fe—B sintered magnet may be used as the permanent magnet matrix, and dysprosium (Dy) may be used as the metal increasing the coercive force of the permanent magnet. Multiple indentations disposed in a straight line may be used as the cut-out parts, or a straight groove may also be used.


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Kitahara, Makoto. (2018). Permanent magnet and manufacturing method therefor (U.S. Patent No. 9928956). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9928956

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