Patents by Inventor Youichiro Higashimoto

Youichiro Higashimoto 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).

  • Short ARC tube having an intermediate layer between the side tube and the retaining body
    Patent number: 6356018
    Abstract: A short arc lamp with a high lamp sustaining voltage in which there is no crack formation in the corner areas of the faces of shrunken regions of a side tube and of cylindrical retaining bodies for upholding parts of the electrodes, even if the gas pressure is high during operation is obtained, in a short arc lamp in which arc tube has a cathode and an anode disposed opposite one another, and in which the upholding parts of the cathode and anode are inserted and held in cylindrical retaining bodies which are supported in the shrunken regions of side tubes connected to the arc tube, by intermediate layers of metal or ceramic being located between the cylindrical retaining bodies and the shrunken regions, and by the cylindrical retaining bodies and the shrunken regions not being welded to one another into a single part.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: March 12, 2002
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Youichiro Higashimoto, Yukihiro Morimoto, Yoshihiko Shinohara
  • SHORT ARC TUBE HAVING AN INTERMEDIATE LAYER BETWEEN THE SIDE TUBE AND THE RETAINING BODY
    Publication number: 20020021091
    Abstract: A short arc lamp with a high lamp sustaining voltage in which there is no crack formation in the corner areas of the faces of shrunken regions of a side tube and of cylindrical retaining bodies for upholding parts of the electrodes, even if the gas pressure is high during operation is obtained, in a short arc lamp in which arc tube has a cathode and an anode disposed opposite one another, and in which the upholding parts of the cathode and anode are inserted and held in cylindrical retaining bodies which are supported in the shrunken regions of side tubes connected to the arc tube, by intermediate layers of metal or ceramic being located between the cylindrical retaining bodies and the shrunken regions, and by the cylindrical retaining bodies and the shrunken regions not being welded to one another into a single part.
    Type: Application
    Filed: October 28, 1998
    Publication date: February 21, 2002
    Inventors: YOUICHIRO HIGASHIMOTO, YUKIHIRO MORIMOTO, YOSHIHIKO SHINOHARA