Metal treatment – Process of modifying or maintaining internal physical... – Superconductive metal or alloy
Reexamination Certificate
2005-09-12
2008-12-02
Sheehan, John P. (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Superconductive metal or alloy
C419S034000, C029S599000
Reexamination Certificate
active
07459031
ABSTRACT:
A method for producing an Nb3Sn superconductive wire material using a powder process is provided, in which a powdered raw material is filled in a sheath made of Nb or an Nb-based alloy, and the above sheath is subjected to diameter reduction to form a wire, followed by heat treatment to form a superconducting layer at the interface between the sheath and the filled powder. The above powdered raw material contains powdered Sn, powdered Cu, and a powdered alloy or a powdered intermetallic compound, which is formed from Sn and at least one metal selected from the group consisting of Ti, Zr, Hf, V, and Ta.
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International Search Report of PCT/JP2005/016772 mailed Dec. 20, 2005.
Extended European Search Report dated Jul. 9, 2008 regarding Application No. 05778559.4—2222 / 1796109 PCT/JP2005016772.
Tachikawa, K., et al., “High-Field Performance and Structure of (Nb,Ta)3Sn Superconductors Produced by Ta-Sn Core”, IEEE Transactions on Applied Superconductivity, vol. 11, No. 1, Mar. 2001, pp. 3663-3666.
Tachikawa, K., et al., XP-002484133 “Optimization of Processing Parameter of (Nb,Ta)3Sn Superconductors with Ta-Sn Core”, CP614, Advances in Cryogenic Engineering: Proceedings of the International Cryogenic Materials Conference—ICMC, vol. 48, © 2002, pp. 917-924.
Kato Hiroyuki
Miyazaki Takayoshi
Tachikawa Kyoji
Zaitsu Kyoji
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Kabushiki Kaisha Kobe Seiko Sho
Reed Smith LLP
Sheehan John P.
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