Patents by Inventor Kenji Kakaya

Kenji Kakaya 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 manufacturing organic electroluminescent element and apparatus therefor
    Patent number: 5817366
    Abstract: The present invention provides a process and apparatus for manufacturing organic electroluminescence cell, wherein the steps after formation of a transparent electrode on a substrate plate up to formation of a protective film are successively carried out in vacuum chambers which are isolated from the oxidative external atmosphere and thereafter withdrawn from the chambers into the air. A plurarity of layer portions of at least a portion of the electroluminescence cell is formed in a plurality of woriking chambers and withdrawn to the outside after formation of a protective film thereon.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: October 6, 1998
    Assignee: TDK Corporation
    Inventors: Michio Arai, Kenji Kakaya, Kenryo Namba