Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Reexamination Certificate
2007-03-06
2007-03-06
Sheehan, John P. (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
C148S301000, C164S462000
Reexamination Certificate
active
10642276
ABSTRACT:
A method of making a magnetic alloy material includes the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt to obtain a rapidly solidified alloy represented by: Fe100-a-b-cREaAbTMcwhere RE is at least one rare-earth element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm and including at least about 90 at % of La; A is at least one element selected from Al, Si, Ga, Ge and Sn; TM is at least one transition metal element selected from Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn; and 5 at %≦a≦10 at %, 4.7 at %≦b≦18 at % and 0 at %≦c≦9 at %; and producing a compound phase having an NaZn13-type crystal structure in at least about 70 vol % of the rapidly solidified alloy.
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U.S. Appl. No. 10/381,009, filed on Mar. 20, 2003, currently pending; for: “Magnetic Refrigerant Material, Regenerator and Magnetic Refrigerator”; Applicants: Hirofumi Wada et al.
Hirosawa Satoshi
Kanekiyo Hirokazu
Kogure Ryosuke
Nishiuchi Takeshi
Keating & Bennett LLP
Neomax Co. Ltd.
Sheehan John P.
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