Metal treatment – Stock – Age or precipitation hardened or strengthened
Patent
1992-02-18
1993-09-28
Dean, H.
Metal treatment
Stock
Age or precipitation hardened or strengthened
420485, 148685, C22C 906
Patent
active
052483517
ABSTRACT:
A copper alloy for an electronic device comprises 2.0 wt% -8 wt% of Ni, 0.1 wt% -0.8 wt% of P, 0.06 wt% -1 wt% of Si and the rest being Cu and unavoidable impurities.
The rest may include 0.03 wt% -2.0 wt% of Zn. The copper allow has an oxygen content of 20 ppm or less.
REFERENCES:
patent: 2155405 (1939-04-01), Crampton et al.
patent: 2155407 (1939-04-01), Crampton et al.
patent: 4362579 (1982-12-01), Tsuji
patent: 4446939 (1984-08-01), Kim et al.
CA 113(10):8334.0.m Mar. 1990.
Decision of the Bundespatentgericht of Apr. 25, 1990 (13W(pat) 48/47.
Bayer-Schwarzmaier-Zeiler, "10 years of BPatG", pp. 201-224.
Hashizume Kimio
Itou Takefumi
Iwase Shinichi
Kubozono Kenji
Nakagima Takashi
Dean H.
Mitsubishi Denki & Kabushiki Kaisha
Phipps Margery S.
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