Patents by Inventor Naotoshi Miyazawa

Naotoshi Miyazawa 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).

  • Electroluminescent device having an additional selenium layer
    Patent number: 4647813
    Abstract: An electroluminescent device wherein a light-emitting layer is formed between electrode layers, and a selenium layer is formed between the light-emitting layer and at least one of the electrode layers. Each of the crystals in the selenium layer grows in a columnar shape in the direction extending at right angles to the light-emitting layer.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: March 3, 1987
    Assignees: Koa Corporation, Kiyoshi Takahashi, Makoto Konagai
    Inventors: Motoi Kitabayashi, Takuo Hayashi, Norihiko Ozawa, Yukihiro Hirasawa, Naotoshi Miyazawa