Patents by Inventor Hirohide Kofuji

Hirohide Kofuji 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 for separating fission product, and apparatus used therefor
    Patent number: 8080162
    Abstract: Provided is a method that can remove fission products in a spent electrolyte produced in a dry reprocessing process by an easy operation and can vitrify the fission products easily, the fission products including not only the fission products that generate precipitate but also the fission products that generate no precipitate. A spent electrolyte produced in a dry reprocessing process is subjected to a phosphate conversion processing to obtain a processing target substance; the processing target substance is passed through a separating material 10 including an iron phosphate glass at a temperature of not more than a softening point of the iron phosphate glass in order to remove insoluble fission products included in the processing target substance by filtration with the separating material and to sorb fission products in solution to the separating material for separation; and the iron phosphate glass holding the fission products is used as a waste vitrification material.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: December 20, 2011
    Assignee: Japan Atomic Energy Agency
    Inventors: Ippei Amamoto, Hirohide Kofuji, Mineo Fukushima, Munetaka Myochin
  • Method for separating fission product, and apparatus used therefor
    Publication number: 20100294720
    Abstract: Provided is a method that can remove fission products in a spent electrolyte produced in a dry reprocessing process by an easy operation and can vitrify the fission products easily, the fission products including not only the fission products that generate precipitate but also the fission products that generate no precipitate. A spent electrolyte produced in a dry reprocessing process is subjected to a phosphate conversion processing to obtain a processing target substance; the processing target substance is passed through a separating material 10 including an iron phosphate glass at a temperature of not more than a softening point of the iron phosphate glass in order to remove insoluble fission products included in the processing target substance by filtration with the separating material and to sorb fission products in solution to the separating material for separation; and the iron phosphate glass holding the fission products is used as a waste vitrification material.
    Type: Application
    Filed: January 20, 2010
    Publication date: November 25, 2010
    Inventors: Ippei Amamoto, Hirohide Kofuji, Mineo Fukushima, Munetaka Myochin