Patents by Inventor Kohhei Iwase

Kohhei Iwase 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).

  • Arc tube and low-pressure mercury lamp that can be reduced in size
    Patent number: 7332866
    Abstract: An arc tube includes an arc tube body and a pair of electrodes. The arc tube body is formed from a glass tube which is double-spirally wound from a middle portion to both ends around a spiral axis. The pair of electrodes are sealed at both ends of the arc tube body. Mercury is enclosed in the arc tube substantially in a single form. Each of the electrodes includes a multiple-coiled filament which is wound substantially one turn in a last coiling stage.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: February 19, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akiko Nakanishi, Kohhei Iwase, Kenji Nakano, Kenji Itaya, Seidou Tani, Noriyuki Uchida
  • 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
  • Arc tube and low-pressure mercury lamp that can be reduced in size
    Publication number: 20040263079
    Abstract: An arc tube includes an arc tube body and a pair of electrodes. The arc tube body is formed from a glass tube which is double-spirally wound from a middle portion to both ends around a spiral axis. The pair of electrodes are sealed at both ends of the arc tube body. Mercury is enclosed in the arc tube substantially in a single form. Each of the electrodes includes a multiple-coiled filament which is wound substantially one turn in a last coiling stage.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 30, 2004
    Inventors: Akiko Nakanishi, Kohhei Iwase, Kenji Nakano, Kenji Itaya, Seidou Tani, Noriyuki Uchida