Patents Examined by J. M. Coray
  • Magnet wire and electromagnetic relay using the same
    Patent number: 5254408
    Abstract: A polyurethane magnet wire comprising a conductor having provided thereon a polyurethane insulation coating, wherein the total amount of the phenolic compounds contained in organic compounds which evaporate from said coating by heating at 280.degree. C. for 2 minutes is 0.2 wt % or less based on the weight of the coating and the total amount of the organic compounds is 2 wt % or less based on the weight of the coating; and an electric relay comprising such a wire.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: October 19, 1993
    Assignee: Sumito Electric Industrial Co., Ltd.
    Inventors: Akihisa Takeuchi, Waichiro Kozen, Hirohiko Nakabayashi