Patents by Inventor Robert Lafont

Robert Lafont 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 and apparatus of producing iron
    Patent number: 4147334
    Abstract: In a method of producing iron by direct reduction of the ore, compaction into agglomerates and fusion, where the ore is reduced by a gaseous process with pre-reduction to monoxide FeO at 1000.degree. C., followed by a final reduction at 700.degree. C. The resultant powder is compacted into agglomerates and dumped, in successive loads after each pour, into an induction melting furnace and melted by contact and mixing with a preexistent charge of liquid metal. An amount equivalent to the newly-melted charge is poured into a refining ladle, after skimming off the slag.
    Type: Grant
    Filed: January 5, 1978
    Date of Patent: April 3, 1979
    Assignee: Regie Nationale des Usines Renault
    Inventors: Robert Lafont, Louis H. Hallot
  • Method of producing iron
    Patent number: 4116678
    Abstract: In a method of producing iron by direct reduction of the ore, compaction into agglomerates and fusion, where the ore is reduced by a gaseous process with pre-reduction to monoxide FeO at 1000.degree. C, followed by a final reduction at 700.degree.C. The resultant powder is compacted into agglomerates and dumped, in successive loads after each pour, into an induction melting furnace and melted by contact and mixing with a preexistent charge of liquid metal. An amount equivalent to the newly-melted charge is poured into a refining ladle, after skimming off the slag.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: September 26, 1978
    Assignee: Regie Nationale des Usines Renault
    Inventors: Robert Lafont, Louis H. Hallot