Patents by Inventor Katsuya Owada

Katsuya Owada 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).

  • Optical information recording medium
    Patent number: 9082430
    Abstract: An optical information recording medium includes a substrate that has a recessed portion on a surface thereof, a recording layer, and a reflective layer. By combination of ranges of an optical density of the recording layer and a depth of the recessed portion of the substrate, degradation of reflectance is suppressed.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: July 14, 2015
    Assignee: SONY CORPORATION
    Inventors: Atsushi Takeuchi, Katsuya Owada
  • OPTICAL INFORMATION RECORDING MEDIUM
    Publication number: 20150036473
    Abstract: An optical information recording medium includes a substrate that has a recessed portion on a surface thereof, a recording layer, and a reflective layer. By combination of ranges of an optical density of the recording layer and a depth of the recessed portion of the substrate, degradation of reflectance is suppressed.
    Type: Application
    Filed: April 18, 2013
    Publication date: February 5, 2015
    Inventors: Atsushi Takeuchi, Katsuya Owada