Patents by Inventor Mikio Miyamoto

Mikio Miyamoto 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).

  • Glass bulb for a cathode ray tube and cathode ray tube
    Patent number: 6597102
    Abstract: A glass bulb for a cathode ray tube comprising a panel portion having a substantially rectangular face portion and a funnel portion having a neck portion, wherein when the glass bulb is used for a cathode ray tube, the glass bulb at least regionally suffers from a tensile stress resulting from the atmospheric pressure on the outer surface of the glass bulb having a vacuum inside, at least part of the face portion of the panel portion where the tensile stress over the face portion has a maximum value &sgr;VP has a compressive stress layer formed by chemical tempering on the outer surface, and the &sgr;VP, the magnitude of the compressive stress on the compressive stress layer &sgr;C MPa, and the thickness of the compressive stress layer tC &mgr;m satisfy the following relationship: 120/tC≧(1−|&sgr;VP/&sgr;C|)>30/tC provided that &sgr;VP≧20 MPa.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: July 22, 2003
    Assignee: Asahi Glass Company, Limited
    Inventors: Tsunehiko Sugawara, Mikio Miyamoto, Toshihiro Ohashi, Takahiro Murakami
  • Glass bulb for a cathode ray tube and cathode ray tube
    Publication number: 20030038582
    Abstract: A glass bulb for a cathode ray tube comprising a panel portion having a substantially rectangular face portion and a funnel portion having a neck portion, wherein when the glass bulb is used for a cathode ray tube, the glass bulb at least regionally suffers from a tensile stress resulting from the atmospheric pressure on the outer surface of the glass bulb having a vacuum inside, at least part of the face portion of the panel portion where the tensile stress over the face portion has a maximum value &sgr;VP has a compressive stress layer formed by chemical tempering on the outer surface, and the &sgr;VP, the magnitude of the compressive stress on the compressive stress layer &sgr;C MPa, and the thickness of the compressive stress layer tC &mgr;m satisfy the following relationship:
    Type: Application
    Filed: April 11, 2002
    Publication date: February 27, 2003
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Tsunehiko Sugawara, Mikio Miyamoto, Toshihiro Ohashi, Takahiro Murakami