Patents by Inventor Philippe Liebaert

Philippe Liebaert 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).

  • Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall
    Patent number: 7513930
    Abstract: In the method of producing metals or metal alloys of high purity, in particular metallic chromium, granules of metal containing non-metallic inclusions and a reducing agent are treated under predetermined conditions of temperature and pressure so that the reducing agent reacts on the inclusions. During the treatment, the granules (26) are placed in a crucible (2) having an opening (14), and a wall (4) presenting at least one orifice (24).
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: April 7, 2009
    Assignee: Delachaux S.A.
    Inventor: Philippe Liebaert
  • Method for production of metallic elements of high purity such as chromes
    Patent number: 7361205
    Abstract: The invention relates to a method of producing granules made of high purity metal or metal alloy, in particular based on chromium, the method being characterized in that it comprises the steps consisting in: preparing a metal or a metal alloy having non-metallic inclusions essentially comprising oxides of the base metal; pelletizing the metal or the alloy with a reducing agent in order to form the pellets or tablets; treating the pellets or tablets in a vacuum in order to enable the reducing agent to react on the inclusions without substantial sublimation of the metal or the metals of the alloy; and eliminating a surface layer from the pellets or tablets. The invention is applicable to manufacturing mechanical parts out of superalloys.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: April 22, 2008
    Assignee: Delachaux S.A.
    Inventor: Philippe Liebaert
  • Method for production of metallic elements of high purity such as chromes
    Publication number: 20050061109
    Abstract: The invention relates to a method of producing granules made of high purity metal or metal alloy, in particular based on chromium, the method being characterized in that it comprises the steps consisting in: preparing a metal or a metal alloy having non-metallic inclusions essentially comprising oxides of the base metal; pelletizing the metal or the alloy with a reducing agent in order to form the pellets or tablets; treating the pellets or tablets in a vacuum in order to enable the reducing agent to react on the inclusions without substantial sublimation of the metal or the metals of the alloy; and eliminating a surface layer from the pellets or tablets. The invention is applicable to manufacturing mechanical parts out of superalloys.
    Type: Application
    Filed: January 20, 2003
    Publication date: March 24, 2005
    Inventor: Philippe Liebaert
  • Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall
    Publication number: 20050034561
    Abstract: In the method of producing metals or metal alloys of high purity, in particular metallic chromium, granules of metal containing non-metallic inclusions and a reducing agent are treated under predetermined conditions of temperature and pressure so that the reducing agent reacts on the inclusions. During the treatment, the granules (26) are placed in a crucible (2) having an opening (14), and a wall (4) presenting at least one orifice (24).
    Type: Application
    Filed: January 20, 2003
    Publication date: February 17, 2005
    Inventor: Philippe Liebaert