Patents by Inventor Frank Haers

Frank Haers 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 for decarburizing steels melts
    Patent number: 6235084
    Abstract: The invention relates to a process for decarburizing a steel melt in a closed metallurgical vessel that is connected to a vacuum unit which includes reducing pressure in the vessel to below 100 mbar, introducing replenishment oxygen to implement the removal of carbon, introducing a predetermined additional amount of oxygen, and introducing a combustible metallic substance with the additional amount of oxygen. The invention also relates to an apparatus for performing the above process including the closable vessel, measurement elements for determining melt temperature and pressure, and a controller for controlling the amount of additional oxygen and combustible metallic substance in response to the melt temperature and pressure.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: May 22, 2001
    Assignee: Mannesmann AG
    Inventors: Horst-Dieter Schöler, Volker Wiegmann, Rainer Dittrich, Frank Haers, Leo Peeters