Patents by Inventor Makoto Ikegaki

Makoto Ikegaki 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 device with electromagnetic shield casing
    Patent number: 4560900
    Abstract: A cathode ray tube device which comprises an electromagnetic shielding casing, a cathode ray tube held in said casing, an elastic material provided between the casing and cathode ray tube in contact therewith, and a space or porous material formed in part of a region defined between the casing and elastic material, and wherein said space or porous material suppresses the axial shifting of the cathode ray tube resulting from the thermal expansion of the elastic material when it is highly heated.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: December 24, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Makoto Ikegaki, Masayuki Nakanishi, Humiyuki Sato, Tokuo Hashimoto
  • Line-type picture tube with light-absorbing particles mixed with blue phosphor
    Patent number: 4135113
    Abstract: A color picture tube in which at least one of phosphor layers emitting green, blue and red lights which are deposited on the inner surface of a glass panel contains a black light-absorbing material.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: January 16, 1979
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Asahide Tsuneta, Yasuo Ohta, Makoto Ikegaki, Takeo Ito