Patents Examined by R. Follet
  • Optical recording medium
    Patent number: 5192626
    Abstract: An optical recording medium comprising a transparent dielectric layer as a protecting and/or enhancing layer is provided, wherein the transparent dielectric layer is made of an oxide of at least one metal selected from the group consisting of indium, tin and tantalum, the oxide further containing at least one element selected from the group of nitrogen and bismuth. This transparent dieletric layer has an excellent adhesivity to a resin substrate, a low internal stress, and a high refractive index.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: March 9, 1993
    Assignee: Teijin Limited
    Inventors: Masahiko Sekiya, Takayuki Ishizaki, Kiyoshi Chiba