Patents by Inventor Shin-ichiro Torada

Shin-ichiro Torada 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 recovering palladium by electrolysis and apparatus therefor
    Patent number: 5250166
    Abstract: A method of recovering palladium from a palladium-containing aqueous solution by electrolysis is provided. The method comprises the steps of dc-electrolyzing the palladium-containing aqueous solution acidified with nitric acid by using an electrolytic cell equipped with a platinum electrode as a cathode to thereby deposit and collect palladium on the cathode, taking the cathode on which palladium has been deposited and collected out of the electrolytic cell, transferring the palladium-deposited cathode to a recovery vessel containing dilute nitric acid therein, and mechanically shaking the cathode in the recovery vessel to remove and recover palladium from the cathode. An apparatus for carrying out the above-described method is also provided.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: October 5, 1993
    Assignees: Doryokuro Kakunenryo Kaihatsu Jigyodan, Johoku Chemical Co., Ltd.
    Inventors: Kenji Motojima, Misato Horie, Shin-ichiro Torada