Metal treatment – Stock – Magnetic
Reexamination Certificate
2006-03-28
2006-03-28
Sheehan, John P. (Department: 1742)
Metal treatment
Stock
Magnetic
C420S083000, C420S121000
Reexamination Certificate
active
07018487
ABSTRACT:
An exchange-spring magnet is prepared using a magnet alloy containing Ta and C in addition to Nd, Fe and B. This exchange-spring magnet uses the magnet alloy prepared by a liquid quenching method or a mechanical alloying method. Further, by subjecting the magnetic alloy having a part set in an amorphous state to heat treatment, an exchange-spring magnet exhibits good properties regarding magnetic flux density and coercive force.
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Kano Makoto
Ono Hideaki
Shimada Munekatsu
Tayu Tetsurou
McDermott Will & Emery LLP
Nissan Motor Co,. Ltd.
Sheehan John P.
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