Patents by Inventor Ygal Volkman

Ygal Volkman 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).

  • Recovery of uranium from wet process phosphoric acid by liquid-solid ion exchange
    Patent number: 4599221
    Abstract: Recovery of uranium from crude wet process phosphoric acid (WPA) by cation exchange using as cation exchanger a resin comprising active amino phosphonic or hydroxy phosphonic groups linked to a matrix. The operational steps comprise reduction of uranium in the WPA to the tetravalent state, contacting the WPA with the cation exchange resin to load the latter with tetravalent uranium, displacing Fe.sup.+2 from the resin, washing the resin with aqueous ammonia, eluting the resin with a carbonate-bicarbonate solution and precipitating uranium from the eluate.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: July 8, 1986
    Assignee: The State of Israel, Atomic Energy Commission, Nuclear Research Center Negev
    Inventors: Zvi Ketzinel, Ygal Volkman, Moshe Hassid