Patents by Inventor Takeshi Onoue

Takeshi Onoue 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).

  • UO.sub.2 pellet fabrication process
    Patent number: 5015422
    Abstract: Making uranium dioxide pellets of controlled grain size by treating 50-500 g/l UO.sub.2 F.sub.2 with NH.sub.3 in a first and a second stages to form (NH.sub.4).sub.2 U.sub.2 O.sub.7 precipitate, wherein the NH.sub.3 /U molar ratio is between 3-5 in the first stage and between 6-12 in the second stage. The precipitate is then formed into UO.sub.2 pellets having grain size within the range from 10 to 100 .mu.m.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: May 14, 1991
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Tadao Yato, Takeshi Onoue, Hiroshi Tanaka
  • Uo2 pellet fabrication process
    Patent number: 4882100
    Abstract: A process of fabricating UO.sub.2 pellets comprising the steps of filtering and drying a slurry of ammonium diuranate (ADU) including ammonium fluoride (NH.sub.4 F), in order to form ADU powder, and then subjecting the ADU powder to calcining, reducing, compacting and sintering treatments, to form UO.sub.2 pellets.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: November 21, 1989
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Tadao Yato, Takeshi Onoue, Hiroshi Tanaka