Patents by Inventor Kunizoh Ogoshi

Kunizoh Ogoshi 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).

  • Method for producing an optical information recording disk
    Patent number: 4871404
    Abstract: A method for manufacturing an optical information recording disk having a reduced eccentricity between the center hole of the disk and the recorded track. A transparent circular substrate is provided having a large circular hole. A metal lamination disk member is formed having an outer diameter larger than the inner diameter of the hole in the substrate and an inner diameter smaller than the inner diameter of the hole in the substrate. The metal lamination disk member is placed on the substrate with an adhesive and positioned so that the center hole in the lamination member is concentric relative to the substrate, whereupon the adhesive is hardened. A molded circular plate is then concentrically mounted having a transfer surface on a main surface of the circular substrate through a setting resin in a liquid phase, which is then hardened.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: October 3, 1989
    Assignee: Pioneer Electronic Corporation
    Inventors: Yasushi Murata, Kunizoh Ogoshi, Fumio Matsui