Patents by Inventor Waichiro Kozen

Waichiro Kozen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Magnet wire and electromagnetic relay using the same
    Patent number: 5347249
    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: April 27, 1993
    Date of Patent: September 13, 1994
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Akihisa Takeuchi, Waichiro Kozen, Hirohiko Nakabayashi
  • 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