Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2005-09-08
2010-10-26
Zimmerman, John J (Department: 1784)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S648000, C428S675000, C428S929000, C439S887000, C439S886000
Reexamination Certificate
active
07820303
ABSTRACT:
There is provided a conductive material comprising a base material made up of a Cu strip, a Cu—Sn alloy covering layer formed over a surface of the base material, containing Cu in a range of 20 to 70 at.%, and having an average thickness in a range of 0.1 to 3.0 μm and an Sn covering layer formed over the Cu—Sn alloy covering layer having an average thickness in a range of 0.2 to 5.0 μm, disposed in that order, such that portions of the Cu—Sn alloy covering layer are exposed the surface of the Sn covering layer, and a ratio of an exposed area of the Cu—Sn alloy covering layer to the surface of the Sn covering layer is in a range of 3 to 75%.
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Sakamoto Hiroshi
Sugishita Yukio
Suzuki Motohiko
Tsuno Riichi
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd).
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Zimmerman John J
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