Patents by Inventor Yukio Akiba

Yukio Akiba 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).

  • Method for producing a phosphor screen of a cathode ray tube
    Patent number: 4670296
    Abstract: The present invention is to positively provide a light pen pick-up phosphor pattern by the application of an inverting method and the selection of its slurry composition. That is, this invention relates to a method for producing a phosphor screen of a cathode ray tube which comprises the steps of forming a photo-sensitive material layer with a predetermined pattern on the inner surface of a cathode ray tube panel, coating on the whole surface of the panel including the photo-sensitive material layer with a phosphor slurry for use in light pen pick-up and removing the photo-sensitive material layer to thereby form a light pen pick-up phosphor pattern which is an inverted pattern of the former pattern.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: June 2, 1987
    Assignee: Sony Corporation
    Inventor: Yukio Akiba