Patents by Inventor Hitoaki Tohda

Hitoaki Tohda 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).

  • Display device and a method for producing the same
    Patent number: 5539275
    Abstract: On the outer surface of the glass face panel 2 of a display device, a first layer 5 of an electrically conductive transparent thin film, a second layer 6 of another transparent thin film consisting essentially of silicon dioxide (SiO.sub.2) or magnesium fluoride (MgF.sub.2), and a third layer 7 of uneven exposed surface, are deposited, whereby a multiplicity of concave regions of said third layer 7 form an interference film together with said first 5 and second layer 6, whereas a multiplicity of convex regions of said third layer form an irregular reflection surface.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: July 23, 1996
    Assignee: Matsushita Electric Corporation
    Inventors: Nozomu Arimoto, Hidekazu Hayama, Toshihide Takahashi, Hitoaki Tohda