Patents by Inventor Hikoshi Yamamoto

Hikoshi Yamamoto 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).

  • Light exposing apparatus for forming a phosphor screen of a cathode ray tube
    Patent number: 4059834
    Abstract: A light exposing apparatus for use in forming a phosphor screen of a color cathode ray tube is disclosed in which a control means is connected to a movable platform for relatively moving a light sensitive film mounted on an inner surface of a face panel relative to an exposing light source facing said light sensitive film with a shadow mask interleaved therebetween. An electrical signal is supplied to said control means each time the accumulated value of ultraviolet ray emitted from said light source reaches a predetermined value, and said movable platform is moved lengthwise of slots in said shadow mask depending on the magnitude of said electrical signal during the light exposing process.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: November 22, 1977
    Assignee: Matsushita Electronics Corporation
    Inventors: Kakuichiro Hosokoshi, Hikoshi Yamamoto, Masayuki Tanaka, Shinichi Omura