Patents by Inventor Ole Andreas Kongsgaarden

Ole Andreas Kongsgaarden 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).

  • Apparatus for feeding charge to an electric smelting furnace
    Patent number: 4001488
    Abstract: An apparatus for feeding charge to an electric smelting furnace is disclosed. The apparatus comprises a single feed hopper and a single feed tube to a separation box from whence charge can be distributed in the furnace. Segregation of the charge being fed is substantially reduced by a system of automatically operated valves.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: January 4, 1977
    Assignee: Elkem-Spigerverket
    Inventors: William Bruff, Ole Andreas Kongsgaarden