Patents by Inventor Noritaka Hamaya

Noritaka Hamaya 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).

  • Electron gun and production method thereof
    Patent number: 6741021
    Abstract: An electron gun includes a grid electrode having a thin plate portion in which an electron beam aperture is formed, wherein the thin plate portion is formed by using a die and punch die to bulge a portion of a metal plate in the plate thickness direction to such an extent as to correspond to the desired dimension of the thin plate portion to form a bulged portion and cutting the bulged portion. With this configuration, it is possible to eliminate a problem of the related art thin plate portion of a grid electrode for an electron gun formed by coining work, which is a rib is formed around the thin plate portion, to make the gap between the thin plate portion and a cathode narrower, since the diameter of the thin plate portion can be enlarged, and to provide beam apertures at arbitrary positions of the thin plate portion.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: May 25, 2004
    Assignee: Sony Corporation
    Inventors: Yasunobu Amano, Masahiko Mizuki, Koichi Tahara, Noritaka Hamaya, Masamichi Senami
  • Electron gun and production method thereof
    Publication number: 20010013752
    Abstract: An electron gun includes a grid electrode having a thin plate portion in which an electron beam aperture is formed, wherein the thin plate portion is formed by bulging a portion of a metal plate in the plate thickness direction to such an extent as to correspond to a desired dimension of the thin plate portion by using a die and a punch die, to form a bulged portion, and cutting the bulged portion. With this configuration, it is possible to eliminate such a problem of a related art thin plate portion of a grid electrode for an electron gun, formed by a coining work, that a rib is formed around the thin plate portion; to make narrower a gap between the thin plate portion and a cathode since the diameter of the thin plate portion can be enlarged; and to provide beam apertures at arbitrary positions of the thin plate portion.
    Type: Application
    Filed: December 26, 2000
    Publication date: August 16, 2001
    Inventors: Yasunobu Amano, Masahiko Mizuki, Koichi Tahara, Noritaka Hamaya, Masamichi Senami