Patents by Inventor Tadashi Kusomoto

Tadashi Kusomoto 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).

  • Patent number: 5126214
    Abstract: An electroluminescent element comprising an electroluminescent (EL) material part which emits a near ultraviolet ray of light and a fluorescent material part which absorbs the ultraviolet light emitted from the electroluminescent material and emits a fluorescence in a visible light range from blue to red. The electroluminescent element provides for emission of lights with a wide range of wavelength and three elementary colors of blue, green and red can be expressed by appropriate combinations of the organic EL material and the fluorescent material. Consequently, the electroluminescent element provides for a full color display.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: June 30, 1992
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokailin, Chishio Hosokawa, Tadashi Kusomoto