Patents Assigned to Nippom Oil Co., Ltd
  • Patent number: 5859722
    Abstract: An electrochromic device having a pair of electrically conductive counter plates, an ion conductive material placed between the electrically conductive counter plates, a layer containing an electrochromic material provided in at least one of locations between the ion conductive material and the electrically conductive counter plates, at least one of the electrically conductive counter plates being a transparent electrically conductive plate having a transparent substrate and a transparent electrode disposed inside the transparent substrate, and at least one of the transparent electrically conductive plate having an ultraviolet absorbing layer containing an organic ultraviolet absorber between the transparent substrate and the transparent electrode.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: January 12, 1999
    Assignee: Nippom Oil Co., Ltd
    Inventors: Masanobu Suga, Tsuyoshi Asano, Yoshinori Nishikitani