Patents Examined by Edward Squillomte
  • Patent number: 5110566
    Abstract: The isotopes of zirconium can be partially or completely separated by loading an aqueous solution of an ionic compound of zirconium onto a cationic exchange resin with pentavalent phosphorus derived active groups which serves as the stationary phase of a chromatograph, eluting the compound with an aqueous acid and collecting distinct elution volumes representative of each isotope. In a preferred embodiment, the eluant is a strong mineral acid, such as hydrochloric acid and the chromatograph is of a type, such as a continuous annular chromatograph, that it can be operated in a continuous, steady state manner.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: May 5, 1992
    Assignee: Westinghouse Electric Corp.
    Inventors: Thomas S. Snyder, Ernest D. Lee
  • Patent number: 5082638
    Abstract: The invention relates to a process for recovering non-ferrous metal values such as nickel, cobalt, copper, zinc, manganese and magnesium from material containing said metals, by converting the non-ferrous metal values into sulphates by using melt and melt coating sulphation and recovering them as metal compounds by a process entity based on a melt and melt coating sulphation.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: January 21, 1992
    Inventors: Pekka J. Saikkonen, Jussi K. Rastas