Patents by Inventor Hajime Iba

Hajime Iba 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).

  • Process and apparatus for regenerating spent reprocessing extraction solvent
    Patent number: 5082602
    Abstract: Cations and anions contained as impurities in a spent organic solvent can be removed by an alkaline aqueous solution passing through inside of hydrophobic porous membrane such as hollow fibers for capturing anions and by an acidic aqueous solution passing through inside of hydrophobic porous membrane such as hollow fibers for capturing cations at the same time so as to regenerate the organic solvent. An apparatus suitable for removing cations and anions simultaneously from the spent organic solvent is also provided.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: January 21, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Naohito Uetake, Ietsugu Sekine, Haruo Hasimoto, Tetsuo Fukasawa, Hajime Iba