Patents by Inventor Mitsumori Tanimoto

Mitsumori Tanimoto 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 selection method and a time-of flight mass spectrometer
    Patent number: 5962849
    Abstract: In the time-of-flight mass spectrometer, the mass spectrometer with high resolution is provided which defines the initial position and the initial velocity of the charged particles and selects only the stable charged particles to measure.First, all of the charged particles Pe are accelerated to one direction in a homogeneous or spatially uniform electric field during a common finite period of time, and then all of the charged particles Pe are accelerated to the opposite direction of the former in a homogeneous or spatially uniform electric field during a common finite period of time and given the same momentum in the opposite direction of the former. Two kind of particle selection method can be adopted. Only the charged particles Pe passing through a predetermined position at a predetermined time are selected by the selector.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: October 5, 1999
    Assignee: Agency of Industrial Science & Technology
    Inventors: Naoaki Saito, Mitsumori Tanimoto, Kazuyoshi Koyama, Yasushi Iwata