Patents by Inventor Sven Olof Kjell Kjell-Berger

Sven Olof Kjell Kjell-Berger 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 at melting in a shaft furnace
    Patent number: 3958919
    Abstract: In a method for melting a material in a vertical shaft furnace having an upper portion, a lower combustion zone portion and an intermediate post-burning portion, said upper and lower portions being separated by a restriction and wherein coke is burned and the material melted in said lower combustion zone by introducing a blast of air close to the bottom of the lower combustion zone to produce combustion gases containing CO and/or H.sub.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: May 25, 1976
    Assignee: Rockwool Aktiebolaget
    Inventor: Sven Olof Kjell Kjell-Berger