Patents by Inventor Johan Nyberg

Johan Nyberg 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).

  • Gel impregnated bushing
    Patent number: 11488741
    Abstract: The present disclosure relates to a high-voltage (HV) bushing comprising a condenser core configured for surrounding a HV electrical conductor. The condenser core comprises an insulation material comprising wound layers of a permeable solid material impregnated with a thermo-reversible gel. The gel comprises an oil and a thickener, the oil comprising iso-paraffinic oil in an amount within the range of 0.1-100 wt % of the oil and the thickener comprising at least one copolymer in an amount within the range of 0.1-10 wt % of the gel.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: November 1, 2022
    Assignee: Hitachi Energy Switzerland AG
    Inventors: Rongsheng Liu, Gerhard Brosig, Santanu Singha, Sung-Woo Cho, Johan Nyberg
  • GEL IMPREGNATED BUSHING
    Publication number: 20200411208
    Abstract: The present disclosure relates to a high-voltage (HV) bushing comprising a condenser core configured for surrounding a HV electrical conductor. The condenser core comprises an insulation material comprising wound layers of a permeable solid material impregnated with a thermo-reversible gel. The gel comprises an oil and a thickener, the oil comprising iso-paraffinic oil in an amount within the range of 0.1-100 wt % of the oil and the thickener comprising at least one copolymer in an amount within the range of 0.1-10 wt % of the gel.
    Type: Application
    Filed: March 14, 2019
    Publication date: December 31, 2020
    Inventors: Rongsheng Liu, Gerhard Brosig, Santanu Singha, Sung-Woo Cho, Johan Nyberg