Patents by Inventor Walter V. Johnstone

Walter V. Johnstone 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).

  • Heat removal system for use in organic light emitting diode displays having high brightness
    Patent number: 6265820
    Abstract: A heat removal system for use in an organic light emitting diode displays is disclosed. The heat removal assembly includes a heat dissipating assembly for dissipating heat from the organic light emitting device, a heat transfer assembly for transferring heat from the top organic light emitting device to the heat dissipating assembly and a cooling assembly for cooling the organic light emitting display device.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: July 24, 2001
    Assignee: eMAGIN Corporation
    Inventors: Amalkumar P. Ghosh, Walter V. Johnstone, Olivier F. Prache, Steven M. Zimmerman