Patents by Inventor Masaaki Yamauchi

Masaaki Yamauchi 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).

  • Exposure apparatus
    Patent number: 3949411
    Abstract: In exposure apparatus adapted to expose the phosphor on the face plate of a colour picture tube provided with a slot type colour selection electrode of the type comprising an exposure light source and a correction lens disposed between the light source and the colour selection electrode the exposure light source and the correction lens are moved with respect to the colour selection electrode.
    Type: Grant
    Filed: February 4, 1974
    Date of Patent: April 6, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Fumiaki Yonai, Masaaki Yamauchi, Takashi Fujimura, Akira Kotoyori