Patents by Inventor Tokuyuki Teraji

Tokuyuki Teraji 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).

  • Diamond semiconductor device
    Patent number: 8338834
    Abstract: The diamond semiconductor device is a diamond semiconductor device where a pair of electrodes are fixed on a diamond substrate, and wherein at least one interface to the electrode on the surface of the diamond substrate has a hydrogen termination and at least the surface of the substrate between the pair of two electrodes is controlled to have a larger electric resistivity value than inside the substrate. Accordingly, a diamond semiconductor device can be realized, capable of attaining the device work stability, especially the device work stability in severe environments such as high temperature with exhibiting the function of the hydrogen termination thereof to the utmost extent.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: December 25, 2012
    Assignee: National Institute for Materials Science
    Inventors: Tokuyuki Teraji, Satoshi Koizumi, Yasuo Koide
  • DIAMOND SEMICONDUCTOR DEVICE
    Publication number: 20100289031
    Abstract: The diamond semiconductor device is a diamond semiconductor device where a pair of electrodes are fixed on a diamond substrate, and wherein at least one interface to the electrode on the surface of the diamond substrate has a hydrogen termination and at least the surface of the substrate between the pair of two electrodes is controlled to have a larger electric resistivity value than inside the substrate. Accordingly, a diamond semiconductor device can be realized, capable of attaining the device work stability, especially the device work stability in severe environments such as high temperature with exhibiting the function of the hydrogen termination thereof to the utmost extent.
    Type: Application
    Filed: July 3, 2008
    Publication date: November 18, 2010
    Inventors: Tokuyuki Teraji, Satoshi Koizumi, Yasuo Koide