Patents by Inventor Satoshi Tsunokawa

Satoshi Tsunokawa 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).

  • Cathode ray tube that minimizes mislanding of electron beams due to thermal expansion and vibration
    Patent number: 5663610
    Abstract: When an outer surface of an effective portion 20 of a panel 20 is substantially spherical, a diagonal axis of the effective portion, a long axial effective diameter, land a short axial effective diameter are Sd, Sh, and Sv, the panel is shaped to satisfy the relationship, Dp/Sd<0.05, V<H<D, 2V<Dp<2H where Dp an amount of drop at an end of the effective diameter of the diagonal axis, H an amount of drop at the end of the effective diameter of the long axis, V an amount of drop at the end of the effective diameter of the short axis, the relationship, Ah/Sh<A/Sv where Ah a distance in the long axial direction of a thicker region on the long axis and Av a distance in the short axial direction of the thicker region on the short axis, wherein, in the thicker region, the panel has a thickness larger than the average thickness Ta of the effective portion, and the relationship between a maximum thickness T max and a minimum T min, (Tmax-Ta)>(Ta-Tmin) or .vertline.T max-Ta.vertline.>.vertline.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 2, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masatsugu Inoue, Satoshi Tsunokawa, Takashi Murai, Norio Shimizu