Patents by Inventor Raoul Roth

Raoul Roth 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).

  • Process for draining overflow foam slag
    Patent number: 5641336
    Abstract: The invention relates to a furnace (1) for melting metal-bearing substances and/or production of liquid metal (4) of the type in which said metal (4) has above it a layer of slag (5) liable to be affected by a "foaming" phenomenon, in which a side wall of said furnace comprises an orifice (17) opening into an adjacent tank (22) capped with a vault (25), said tank (22) being capable of collecting a proportion of said slag (5) by overflowing through said orifice (17) when said foaming phenomenon takes on proportions that risk causing damage to said furnace (1).The invention also relates to a process for the production of liquid metal employing such a furnace.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: June 24, 1997
    Assignee: Sollac
    Inventor: Raoul Roth
  • Metallurgical furnace for production of liquid steel
    Patent number: 5451035
    Abstract: The invention relates to a furnace (1) for melting metal-bearing substances and/or production of liquid metal (4) of the type in which said metal (4) has above it a layer of slag (5) liable to be affected by a "foaming" phenomenon, in which a side wall of said furnace comprises an orifice (17) opening into an adjacent tank (22) capped with a vault (25), said tank (22) being capable of collecting a proportion of said slag (5) by overflowing through said orifice (17) when said foaming phenomenon takes on proportions that risk causing damage to said furnace (1).The invention also relates to a process for the production of liquid metal employing such a furnace.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: September 19, 1995
    Assignee: Sollac (Societe anonyme)
    Inventor: Raoul Roth