Patents by Inventor Jyunichi Imakama

Jyunichi Imakama 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).

  • Hollow cathode lamp
    Patent number: 6548958
    Abstract: In a hollow cathode lamp comprising, in a bulb having a light exit port, a hollow cathode and an anode opposed to the light exit port, which comprises a tubular hood having a tubular shape, having one open end connected to the hollow cathode, having another open end opposed to the light exit port, and having an opening formed in a peripheral side face thereof, and an electron supply disposed at a position to front on the opening, discharge making use of thermoelectrons is implemented between the electron supply and the anode.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: April 15, 2003
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Yuji Shimazu, Toshio Ito, Jyunichi Imakama
  • Hollow cathode lamp
    Publication number: 20020000775
    Abstract: In a hollow cathode lamp comprising, in a bulb having a light exit port, a hollow cathode and an anode opposed to the light exit port, which comprises a tubular hood having a tubular shape, having one open end connected to the hollow cathode, having another open end opposed to the light exit port, and having an opening formed in a peripheral side face thereof, and an electron supply disposed at a position to front on the opening, discharge making use of thermoelectrons is implemented between the electron supply and the anode.
    Type: Application
    Filed: August 22, 2001
    Publication date: January 3, 2002
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Yuji Shimazu, Toshio Ito, Jyunichi Imakama