Rare earth magnet, process for producing same, and motor...

Details Rare earth magnet, process for producing same, and motor... Rare earth magnet, process for producing same, and motor...

2006-01-10

2006-01-10

Sheehan, John P (Department: 1742)

Metal treatment

Stock

Magnetic

C148S302000, C148S101000, C148S102000, C148S103000, C075S232000, C075S233000, C075S234000, C075S244000, C075S246000, C419S012000, C419S020000

Reexamination Certificate

active

06984271

ABSTRACT:
A rare earth magnet to be used in a motor. The rare earth magnet comprises rare earth magnet particles. Additionally, a rare earth oxide is present among the rare earth magnet particles, the rare earth oxide being represented by the following general formula (I):in-line-formulae description="In-line Formulae" end="lead"?R2xR′2(1−x)O3  (I)in-line-formulae description="In-line Formulae" end="tail"?where each of R and R′ is one element selected from the group consisting of yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu), and 0<x<1.

REFERENCES:
patent: 4762574 (1988-08-01), Ghandehari
patent: 4891078 (1990-01-01), Ghandehari
patent: 2002/0112785 (2002-08-01), Sekine et al.
patent: 2004/0000359 (2004-01-01), Tayu et al.
patent: 10-321427 (1998-12-01), None
patent: 2000-82610 (2000-03-01), None
patent: 2002-64010 (2002-02-01), None
Machine translation of Japanese Patent Publication 2000-082610, Mar. 21, 2000.
Machine translation of Japanese Patent Publication No. 2002-064010, Feb. 2, 2002.

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