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. 05, 2011
Filed:
Jun. 09, 2006
Katsuhiko Mori, Naka-gun, JP;
Ryoji Nakayama, Naka-gun, JP;
Muneaki Watanabe, Naka-gun, JP;
Koichiro Morimoto, Niigata, JP;
Tetsurou Tayu, Yokosuka, JP;
Yoshio Kawashita, Yokosuka, JP;
Makoto Kano, Yokohama, JP;
Katsuhiko Mori, Naka-gun, JP;
Ryoji Nakayama, Naka-gun, JP;
Muneaki Watanabe, Naka-gun, JP;
Koichiro Morimoto, Niigata, JP;
Tetsurou Tayu, Yokosuka, JP;
Yoshio Kawashita, Yokosuka, JP;
Makoto Kano, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-Shi, JP;
Abstract
This rare earth magnet having high strength and high electrical resistance has a structure including an R—Fe—B-based rare earth magnet particleswhich are enclosed with a high strength and high electrical resistance composite layer. The high strength and high electrical resistance composite layeris constituted from a glass-based layerthat has a structure comprising a glass phase or R oxide particlesdispersed in glass phase, and R oxide particle-based mixture layersthat are formed on both sides of the glass-based layerand contain an R-rich alloy phasewhich containsatomic % or more of R in the grain boundary of the R oxide particles.