Patents by Inventor Ukou Sumoto

Ukou Sumoto 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 storage medium and method of producing optical storage medium
    Patent number: 7864656
    Abstract: An optical storage medium has a substrate and a cover layer that allows light to pass therethrough in recording or reproduction. Provided between the substrate and the cover layer are at least a reflective film, a first dielectric film, a recording film, and a second dielectric film formed in this order from the substrate side. Provided further between the second dielectric film and the cover layer is a damp-proof film that is at least partially an amorphous film and contains at least an indium oxide.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: January 4, 2011
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hiroshi Tabata, Ukou Sumoto
  • Optical storage medium and method of producing optical storage medium
    Publication number: 20080279080
    Abstract: An optical storage medium has a substrate and a cover layer that allows light to pass therethrough in recording or reproduction. Provided between the substrate and the cover layer are at least a reflective film, a first dielectric film, a recording film, and a second dielectric film formed in this order from the substrate side. Provided further between the second dielectric film and the cover layer is a damp-proof film that is at least partially an amorphous film and contains at least an indium oxide.
    Type: Application
    Filed: May 2, 2008
    Publication date: November 13, 2008
    Applicant: Victor Company of Japan, Ltd.
    Inventors: Hiroshi Tabata, Ukou Sumoto