Patents by Inventor Jozef Hiemeleers

Jozef Hiemeleers 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).

  • Treatment of ores or metallurgical by-products containing arsenic and antimony
    Patent number: 4102976
    Abstract: In a process for treating a metal bearing material containing arsenic and antimony by leaching in an acid solution with an oxygen-containing gas under pressure at a temperature of between 20.degree. and 200.degree. C, the improvement which consists in adding at least one element chosen from the group consisting of arsenic and phosphorus in such an amount to the leach mixture that the molar ratio (As + 4P) : Sb therein shall be at least equal to 8, thus dissolving at least the major part of the arsenic and antimony contained in the starting material.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: July 25, 1978
    Assignee: Metallurgie Hoboken-Overpelt
    Inventors: Jozef Hiemeleers, Achille De Schepper, Antoine Van Peteghem