Patents Assigned to Tamagawa Kikai Kinzoku Kabushiki Kaisha
  • Copper base alloy for leads of integrated circuit
    Patent number: 4249941
    Abstract: A copper base alloy for leads of an integrated circuit consisting essentially of from 0.5 to 1.5% by weight of iron, from 0.5 to 1.5% by weight of tin, from 0.01 to 0.35% by weight of phosphorus, and the balance of copper and inevitable impurities. Said alloy possesses satisfactory properties which are required of leads of integrated circuits.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: February 10, 1981
    Assignee: Tamagawa Kikai Kinzoku Kabushiki Kaisha
    Inventors: Rensei Futatsuka, Tadao Sakakibara