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. 05, 2016
Filed:
Mar. 27, 2013
Applicant:
Hyundai Motor Company, Seoul, KR;
Inventors:
Kyoung Bum Kim, Gyeonggi-do, KR;
Sang Hoon Moon, Gyeonggi-do, KR;
Hyoung Jun Cho, Seoul, KR;
Jung Shik Kim, Seoul, KR;
Assignee:
Hyundai Motor Company, Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/02 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H02K 1/02 (2013.01); H01F 41/0293 (2013.01);
Abstract
Disclosed herein is a rotor permanent magnet apparatus for a drive motor based on temperature distribution. The permanent magnet may enhance coercivity without a substantial decrease in magnetic flux density Br by applying a grain boundary diffusion process of diffusing dysprosium on the surface of the permanent magnet based on the temperature distribution of the permanent magnet.