C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
148/55.3
C22F 1/08 (2006.01) C30B 1/02 (2006.01) H05K 1/09 (2006.01)
Patent
CA 1220121
ABSTRACT OF THE DISCLOSURE A method of producing an electrical conductor is described. The electrical conductor is made of an oxygen-free copper material having an oxygen content of not more than 50 ppm, wherein copper crystals constituting the copper material are giant crystals. These giant copper crystals are formed by heating the copper material in an inert atmosphere maintained at a temperature exceeding 800°C but below the melting point of copper for at least 15 minutes.
449074
Kamada Osao
Nishiyama Shinichi
Hitachi Cable Ltd.
Riches Mckenzie & Herbert Llp
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