Patents by Inventor Katsumi Shojo

Katsumi Shojo 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: 7602126
    Abstract: Flash discharge lamp having an arc tube in which there is a pair of opposed electrodes, a rod-shaped trigger electrode which runs along the outside surface of the arc tube in its lengthwise direction; and a sealed tubular body which jackets the trigger electrode and has a hermetically sealed arrangement containing a metal foil. The trigger electrode has a recessed part on its surface in the vicinity of the metal foil and the recessed part is at least partially filled with the material of which the sealed tubular body is formed.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: October 13, 2009
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Tetsuo Fuse, Katsumi Shojo, Takayuki Hiraishi
  • Publication number: 20070267974
    Abstract: Flash discharge lamp having an arc tube in which there is a pair of opposed electrodes, a rod-shaped trigger electrode which runs along the outside surface of the arc tube in its lengthwise direction; and a sealed tubular body which jackets the trigger electrode and has a hermetically sealed arrangement containing a metal foil. The trigger electrode has a recessed part on its surface in the vicinity of the metal foil and the recessed part is at least partially filled with the material of which the sealed tubular body is formed.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 22, 2007
    Applicant: USHIODENKI KABUSHIKI KAISHA
    Inventors: Tetsuo FUSE, Katsumi SHOJO, Takayuki HIRAISHI
  • Patent number: 6936956
    Abstract: A discharge lamp with a high output power in which an increase of the current to be supplied to the discharge lamp can be enabled without the need to enlarge the discharge lamp and the surrounding system. The discharge lamp includes an arc tube having a pair of opposed electrodes, at least one of the electrodes having an electrode body in which a hermetically sealed interior space is formed, and a heat conductor partially filling the hermetically sealed interior space. This heat conductor consists of metal that has a higher thermal conductivity or a lower melting point than the metal comprising the electrode body.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: August 30, 2005
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Mitsuru Ikeuchi, Katsumi Shojo, Yoichi Kono
  • Publication number: 20030201719
    Abstract: A discharge lamp with a high output power in which an increase of the current to be supplied to the discharge lamp can be enabled without the need to enlarge the discharge lamp and the surrounding system. The discharge lamp includes an arc tube having a pair of opposed electrodes, at least one of the electrodes having an electrode body in which a hermetically sealed interior space is formed, and a heat conductor partially filling the hermetically sealed interior space. This heat conductor consists of metal that has a higher thermal conductivity or a lower melting point than the metal comprising the electrode body.
    Type: Application
    Filed: April 23, 2003
    Publication date: October 30, 2003
    Applicant: Ushiodenki Kabushiki Kaisha
    Inventors: Mitsuru Ikeuchi, Katsumi Shojo, Yoichi Kono