Patents Examined by Rolt Hille
  • Corrosion-resistant aluminum electronic material
    Patent number: 4912544
    Abstract: A corrosion-resistant aluminum electronic material comprising an alloy containing aluminum as the principal component and, in addition, a small amount of a noble metal, the content of said noble metal being equal to or less than that at the eutectic point having the primary crystal of aluminum. As the noble metal, there is contained at least one metal selected from Pt, Pd, Rh, Ir, Os, Ru, Au and Ag. Said electronic material is used for ball-bonding wire and distributing film in a semiconductor device, and the like.
    Type: Grant
    Filed: August 10, 1983
    Date of Patent: March 27, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Jin Onuki, Masateru Suwa, Masahiro Koizumi, Osamu Asai, Katsumi Suzuki, Ryo Hiraga