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:
Apr. 10, 2012
Filed:
Jun. 27, 2008
Taeko Tsubokura, Chuo-ku, JP;
Makoto Iwasaki, Chuo-ku, JP;
Makoto Nakane, Chuo-ku, JP;
Fumitaka Baba, Chuo-ku, JP;
Taeko Tsubokura, Chuo-ku, JP;
Makoto Iwasaki, Chuo-ku, JP;
Makoto Nakane, Chuo-ku, JP;
Fumitaka Baba, Chuo-ku, JP;
TDK Corporation, Chuo-ku, Tokyo, JP;
Abstract
There is provided a rare earth magnet with excellent Br and HcJ values. The rare earth magnet according to a preferred embodiment of the invention is characterized by being composed mainly of R (where R is at least one element selected from among rare earth elements including Y), B, Al, Cu, Zr, Co, O, C and Fe, wherein the content of each element is R: 25-34 wt %, B: 0.85-0.98 wt %, Al: 0.03-0.3 wt %, Cu: 0.01-0.15 wt %, Zr: 0.03-0.25 wt %, Co: ≦3 wt % (but not 0 wt %), O: ≦0.2 wt %, C: 0.03-0.15 wt % and Fe: remainder.