Patents by Inventor Yoshiyuki Tohge

Yoshiyuki Tohge 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).

  • Particle analyzing apparatus having pressure control system
    Patent number: 5245318
    Abstract: A particle analyzing apparatus having sample liquid pressurizing means for pressurizing sample liquid containing therein particles to be examined and supplying it to a portion to be examined, sheath liquid pressurizing means for pressurizing sheath liquid and supplying it to the portion to be examined in such a manner as to surround the sample liquid, a pressure sensor provided in the flow path of the sheath liquid between the sheath liquid pressurizing means and the portion to be examined, pressure control means for controlling the pressure value of the sheath liquid pressurizing means so that the output of the pressure sensor becomes constant, and means for applying light to the portion to be examined and photometering light emitted from the particles to be examined to thereby effect particle analysis.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: September 14, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Tohge, Naoki Yuguchi