Patents by Inventor Shoji Fukuchi

Shoji Fukuchi 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 recording medium and method of producing same
    Patent number: 5846626
    Abstract: An optical recording medium capable of recording and/or reproducing an information by using a laser beam, comprising: a support layer having an information signal-recording portion on one side surface thereof on which said laser beam is incident, and a transparent layer disposed over the support layer and having a thickness smaller than that of the support layer. In accordance with the present invention, there are further provided production method for optical or magneto-optical discs whereby a high density reproduction can be achieved.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: December 8, 1998
    Assignee: Sony Corporation and Sony Disc Technology Inc.
    Inventors: Toshiyuki Kashiwagi, Motohiro Furuki, Shoji Fukuchi, Yoshitake Yanagisawa