Patents by Inventor Yasuo Sonoyama

Yasuo Sonoyama 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).

  • Transparent electrodes of thin-film electroluminescence panel
    Patent number: 4855641
    Abstract: A thin-film EL panel of the layer structure with transparent electrodes and back electrodes sandwiching therebetween insulative layers and a light-emitting layer and forming display picture elements on the panel is characterized as having the transparent electrodes shaped differently at these display picture elements and other places.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: August 8, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Noriaki Nakamura, Masashi Kawaguchi, Yasuo Sonoyama