Patents by Inventor Hirofumi Ohmuta

Hirofumi Ohmuta 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).

  • Method of producing nuclear fuel pellet
    Patent number: 5762838
    Abstract: A nuclear fuel green compact is produced by sintering in an atmosphere of reducing gas. A mixed gas of hydrogen and nitrogen to which water vapor is added is used as the reducing gas. By establishing the amount of water vapor added to the mixed gas of hydrogen and nitrogen so that dew point as an indicator is -15.degree. C. or more, the nitrogen content of the produced pellets can be controlled to be equal to or less than 0.0075 wt %.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: June 9, 1998
    Assignee: Mitsubishi Nuclear Fuel Co.
    Inventors: Hirofumi Ohmuta, Shigetoshi Nakabayashi