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:
May. 24, 2016
Filed:
Mar. 30, 2011
Fumitaka Baba, Tokyo, JP;
Satoshi Tanaka, Tokyo, JP;
Makoto Iwasaki, Tokyo, JP;
Chikara Ishizaka, Tokyo, JP;
Fumitaka Baba, Tokyo, JP;
Satoshi Tanaka, Tokyo, JP;
Makoto Iwasaki, Tokyo, JP;
Chikara Ishizaka, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
Provided is a rare earth sintered magnetcomprising a group of main phase grainseach composed of an R-T-B-based rare earth magnet comprising a coreand a shellcovering the core, wherein a thickness of the shellis 500 nm or less, R includes a light rare earth element and a heavy rare earth element, and a Zr compoundis present in a grain boundary phaseof the group of main phase grainsand/or the shell. Also provided are a motor comprising the rare earth sintered magnetand an automobile comprising the motor.