Patents by Inventor Yuji Tsuneto

Yuji Tsuneto 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).

  • Compact self-ballasted fluorescent lamp resistant to heat deformation
    Patent number: 6984926
    Abstract: A compact self-ballasted fluorescent lamp has an arc tube in a double-spiral configuration, the arc tube being formed by bending a glass tube around an axis of spiral up to both ends of the glass tube, and a holder that is made of resin and holds this arc tube. Electrodes, each being equipped with a filament coil, are sealed at respective ends of the glass tube. The holder is made up of a holding resin member with a cylindrical shape having a closed bottom and a resin cover in a cone shape, the holder including a circumferential wall and an end wall that is at the edge of the circumferential wall. A heat-dissipating plate is provided inside the holding resin member, at a position corresponding to where the filament coils within the glass tube are.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: January 10, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuji Tsuneto, Hiroki Nakagawa, Akiko Nakanishi, Kenji Itaya, Kenji Nakano, Kohhei Iwase, Hiroki Kitagawa, Yasushige Tomiyoshi, Shiro Iida
  • Compact self-ballasted fluorescent lamp resistant to heat deformation
    Publication number: 20050023947
    Abstract: A compact self-ballasted fluorescent lamp has an arc tube in a double-spiral configuration, the arc tube being formed by bending a glass tube around an axis of spiral up to both ends of the glass tube, and a holder that is made of resin and holds this arc tube. Electrodes, each being equipped with a filament coil, are sealed at respective ends of the glass tube. The holder is made up of a holding resin member with a cylindrical shape having a closed bottom and a resin cover in a cone shape, the holder including a circumferential wall and an end wall that is at the edge of the circumferential wall. A heat-dissipating plate is provided inside the holding resin member, at a position corresponding to where the filament coils within the glass tube are.
    Type: Application
    Filed: February 17, 2004
    Publication date: February 3, 2005
    Inventors: Yuji Tsuneto, Hiroki Nakagawa, Akiko Nakanishi, Kenji Itaya, Kenji Nakano, Kohhei Iwase, Hiroki Kitagawa, Yasushige Tomiyoshi, Shiro Iida
  • Fluorescent lamp
    Patent number: D542426
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: May 8, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenji Itaya, Yuji Tsuneto, Shiro Iida