Patents by Inventor Shoichi Tachimori

Shoichi Tachimori 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 separating transplutonium elements from lanthanides in acidic solutions by solvent extraction
    Patent number: 5510091
    Abstract: The improved method of separating transplutonium elements from lanthanides comprises the steps of adding an organic solvent containing an N-heterocyclic compound and a hydrophobic anion to an acidic aqueous solution containing both a lanthanide and a transplutonium element (TPE) and then extracting the transplutonium element into the organic phase. The method is capable of selective extraction of TPE without producing liquid wastes, is adapted to the continuous treatment process and yet can be implemented using inexpensive chemicals.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: April 23, 1996
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Jiri Rais, Shoichi Tachimori