Patents by Inventor Toshishige Ueno

Toshishige Ueno 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).

  • Impregnating oil for a capacitor comprising two metallized plastic films and the capacitor impregnated with the oil
    Patent number: 4594642
    Abstract: Disclosed herein are an impregnating oil prepared by admixing an isocyanate compound of tolylene diisocyanate and/or 4,4-diisocyanate-3,3-dimethyldiphenyl with an insulating oil of 1-tolyl-2-phenylethane, 1-ethylphenyl-2-phenylethane, 1-isopropylphenyl-2-phenylethane and/or 1,2-ditolylethane and a capacitor comprising two metallized plastic films impregnated with the thus prepared impregnating oil.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: June 10, 1986
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akira Ito, Toshishige Ueno
  • Capacitor comprising metallized polypropylene film impregnated with a certain bis-(alkylphenyl) alkane
    Patent number: 4548745
    Abstract: Disclosed herein is a capacitor comprising a metallized polypropylene film impregnated with a specified impregnating oil, i.e., a 1,2-bis(alkylphenyl)ethane, the thus prepared capacitor being suitable for use under a high voltage and a high potential gradient.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: October 22, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takayuki Yagitani, Hiromasa Matsui, Akira Ito, Toshishige Ueno