Metal treatment – Stock – Magnetic
Reexamination Certificate
2008-05-13
2008-05-13
Sheehan, John P. (Department: 1793)
Metal treatment
Stock
Magnetic
C148S101000, C148S103000
Reexamination Certificate
active
07371292
ABSTRACT:
A Nd—Fe—B type anisotropic exchange spring magnet is produced by a method of obtaining powder of a Nd—Fe—B type rare earth magnet alloy which comprises hard magnetic phases and soft magnetic phases wherein a minimum width of the soft magnetic phases is smaller than or equal to 1 μm and a minimum distance between the soft magnetic phases is greater than or equal to 0.1 μm, obtaining a compressed powder body by compressing the powder, and obtaining the Nd—Fe—B type anisotropic exchange spring magnet by sintering the compressed powder body using a discharge plasma sintering unit.
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Kano Makoto
Ono, legal representative Takae
Shimada Munekatsu
Tayu Tetsurou
McDermott Will & Emery LLP
Nissan Motor Co,. Ltd.
Sheehan John P.
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