Patents by Inventor Witold Kowal

Witold Kowal 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).

  • Smelting furnace for direct obtaining of copper from ore concentrates/and copper ores
    Patent number: 4325538
    Abstract: The subject of the invention is a method of prevention of deep infiltration of copper into a lining of a smelting furnace for direct obtaining of copper from ore concentrates and copper ores.The essence of the invention consists in that to the lower part of the hearth (2) of a furnace a cooling medium is delivered which is distributed in streams below a lining (1) of the furnace. Particular layers (1) of the hearth (2) have good heat conductivity, and in the lower part of the hearth (2) channels (4) are situated which serve for distribution of the cooling medium. The solution according to the invention prevents completely an excessive temperature increase of the furnace jacket.
    Type: Grant
    Filed: December 27, 1979
    Date of Patent: April 20, 1982
    Assignee: Biuro Projektow Przemyslu Metali Niezelaznych "Bipromet"
    Inventors: Wlodzimierz Wozniczko, Adam Lukasik, Jozef Marczynski, Witold Kowal, Edward Plaskacewicz, Slawomir Pasierb, Norbert Langner