Patents by Inventor Job Dijkhuis

Job Dijkhuis 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 for selectively separating a non-ferrous metal
    Patent number: 5089242
    Abstract: A method for selectively separating Zn from an acidic aqueous solution containing ions of Zn and Fe obtained by leaching of blast furnace dust using hydrochloric acid comprises first precipitating Fe from the solution and then treating the resultent Zn-containing solution with an alkali to precipitate Zn.The Zn-containing solution is treated in two stages; in the first precipitation step the pH is adjusted to from 4.0 to 4.3.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: February 18, 1992
    Assignee: Hoogovens Groep BV
    Inventors: Job Dijkhuis, Anthonie Van Sandwijk