Patents by Inventor Yukihiro Nagamatsu

Yukihiro Nagamatsu 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).

  • Patent number: 6949876
    Abstract: A glass member for use in a cathode ray tube is provided, which can facilitate the heating and softening of glass during sealing and raise the productivity without decreasing the mechanical strength of the product by improving the shapes of the seal end faces of the panel and funnel. In an edge area between an edge of the seal end face of each side part of the glass member for use in the cathode ray tube comprising a glass panel or a funnel and a position about 5 mm away along a tube axis from the edge, a thin edge part is formed to have a thickness decreasing part. The rate of thickness decreasing thereof toward the edge is larger than that of a standard shape in a root area adjacent to the edge area. Also, the thin edge part is formed so that an inequality of 0.3?t1/t0?0.7 is satisfied where t1 is a thickness at a position 1 mm away along the tube axis from the edge, and t0 is a thickness at a position 5 mm away along the tube axis from the edge.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: September 27, 2005
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Teruaki Kugo, Yukihiro Nagamatsu, Michiharu Eta
  • Publication number: 20030214220
    Abstract: A glass member for use in a cathode ray tube is provided, which can facilitate the heating and softening of glass during sealing and raise the productivity without decreasing the mechanical strength of the product by improving the shapes of the seal end faces of the panel and funnel. In an edge area between an edge of the seal end face of each side part of the glass member for use in the cathode ray tube comprising a glass panel or a funnel and a position about 5 mm away along a tube axis from the edge, a thin edge part is formed to have a thickness decreasing part. The rate of thickness decreasing thereof toward the edge is larger than that of a standard shape in a root area adjacent to the edge area. Also, the thin edge part is formed so that an inequality of 0.3≦t1/t0≦0.7 is satisfied where t1 is a thickness at a position 1 mm away along the tube axis from the edge, and t0 is a thickness at a position 5 mm away along the tube axis from the edge.
    Type: Application
    Filed: April 24, 2003
    Publication date: November 20, 2003
    Inventors: Teruaki Kugo, Yukihiro Nagamatsu, Michiharu Eta