Patents by Inventor Yasuhide Tajima

Yasuhide Tajima 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).

  • Gas amount measurement device
    Patent number: 8042378
    Abstract: A gas amount measuring device including a vacuum container, a first pipe, an air release valve being attached to the first pipe, a second pipe, a calibration gas generator being attached to the first pipe, a third pipe, a vacuum gauge, a first valve, a leak valve, a second valve, a turbomolecular pump, a third valve, and a roughing pump being attached to the third pipe in order from a vacuum container side, a first bypass pipe connecting the third pipe between the vacuum container and the first valve to the third pipe between the leak valve and the second valve, a fourth valve being attached to the first bypass pipe, and a second bypass pipe connecting the third pipe between the leak valve and the second valve to the third pipe between the third valve and the roughing pump, a fifth valve being attached to the second bypass pipe.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: October 25, 2011
    Assignees: Japan Atomic Energy Agency, Nikkin Flux Inc.
    Inventors: Tetsuya Abe, Toshihisa Hatano, Hajime Hiratsuka, Koichi Hasegawa, Yasuhide Tajima, Soichiro Omachi
  • GAS AMOUNT MEASUREMENT DEVICE
    Publication number: 20090178460
    Abstract: A gas amount measuring device including a vacuum container, a first pipe, an air release valve being attached to the first pipe, a second pipe, a calibration gas generator being attached to the first pipe, a third pipe, a vacuum gauge, a first valve, a leak valve, a second valve, a turbomolecular pump, a third valve, and a roughing pump being attached to the third pipe in order from a vacuum container side, a first bypass pipe connecting the third pipe between the vacuum container and the first valve to the third pipe between the leak valve and the second valve, a fourth valve being attached to the first bypass pipe, and a second bypass pipe connecting the third pipe between the leak valve and the second valve to the third pipe between the third valve and the roughing pump, a fifth valve being attached to the second bypass pipe.
    Type: Application
    Filed: October 16, 2008
    Publication date: July 16, 2009
    Inventors: Tetsuya Abe, Toshihisa Hatano, Hajime Hiratsuka, Koichi Hasegawa, Yasuhide Tajima, Soichiro Omachi