Metal treatment – Stock – Copper base
Reexamination Certificate
2008-04-08
2008-04-08
Ip, Sikyin (Department: 1793)
Metal treatment
Stock
Copper base
C420S477000, C420S478000, C420S479000, C420S480000, C420S481000
Reexamination Certificate
active
10788037
ABSTRACT:
A lead-free copper alloy based on Cu—Zn—Si and a method of manufacture thereof. The copper alloy is built on the basis of copper, zinc and silicon without toxic additives and consists of: 70 to 83% Cu, 1 to 5% Si and the further matrix-active elements: 0.01 to 2% Sn, 0.01 to 0.3% Fe and/or Co, 0.01 to 0.3% Ni, 0.01 to 0.3% Mn, the remainder Zn and unavoidable impurities.
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Breu Monika
Dannenmann Wolfgang
Hofmann Uwe
Humpenoeder-Boegel, legal representative Doris
Schmid Guenter
Flynn ,Thiel, Boutell & Tanis, P.C.
Ip Sikyin
Wieland-Werke AG
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