Patents by Inventor Akihiko Ohtomo

Akihiko Ohtomo 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).

  • Photocathode and electron tube
    Patent number: 6765352
    Abstract: A photocathode and an electron tube in which the photocathode plate can be securely fixed without using any adhesive. Even under the severe condition that a high vibration resistance is required or thermal stress occurs because of great temperature variation, it can be used widely for an image intensifier, a streak tube, or a photomultiplier. The photocathode plate of the photocathode is sandwiched between a faceplate and a support plate. First pins embedded in the faceplate are joined to the support plate. Therefore, the photocathode plate can be readily fixed securely to the faceplate without using any adhesive.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: July 20, 2004
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Akihiko Ohtomo, Tsuneo Ihara, Kuniyoshi Mori, Yoshiyuki Natsume
  • Photocathode and electron tube
    Publication number: 20030146698
    Abstract: A photocathode and an electron tube in which the photocathode plate can be securely fixed without using any adhesive. Even under the severe condition that a high vibration resistance is required or thermal stress occurs because of great temperature variation, it can be used widely for an image intensifier, a streak tube, or a photomultiplier. The photocathode plate of the photocathode is sandwiched between a faceplate and a support plate. First pins embedded in the faceplate are joined to the support plate. Therefore, the photocathode plate can be readily fixed securely to the faceplate without using any adhesive.
    Type: Application
    Filed: January 30, 2003
    Publication date: August 7, 2003
    Inventors: Akihiko Ohtomo, Tsuneo Ihara, Kuniyoshi Mori, Yoshiyuki Natsume