Patents by Inventor Toyihide Kubo

Toyihide Kubo 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 disk manufacturing method
    Patent number: 5409641
    Abstract: In the optical disk manufacturing method a clamping plate is placed in the cavity of a disk body and the disk body is heated and compressed to connect the clamping plate to the disk body. Prior to connecting the clamping plate, a groove is established around the perimeter of the clamping plate. A disk body with or without a groove has its target surface compressed by a heat press while a region outside the target surface perimeter is pressed by an upper pressure surface to connect the clamping plate without creating a protrusion from the upper surface of the disk.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: April 25, 1995
    Assignee: Awa Engineering Co., Ltd.
    Inventor: Toyihide Kubo