Patents by Inventor Hans Luckert

Hans Luckert 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 and apparatus for the direct and continuous modification of polymer melts
    Patent number: 5458478
    Abstract: A process and an apparatus for the direct, continuous and flexible modification of polymer melts by branching off a branch melt stream from the main melt stream to be modified, dispersing the initially introduced additive in the melt in a specially designed twin-screw extruder, and subsequent recycling of the additive melt concentrate to the melt stream to be modified.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: October 17, 1995
    Assignee: Ems-Inventa AG
    Inventors: Werner Stibal, Daniel Boni, Hans Luckert
  • Process and apparatus for the direct and continuous modification of polymer melts
    Patent number: 5376702
    Abstract: A process and an apparatus for the direct, continuous and flexible modification of polymer melts by branching off a brand melt stream from the main melt stream to be modified, dispersing the initially introduced additive in the melt in a specially designed twin-screw extruder, and subsequent recycling of the additive melt concentrate to the melt stream to be modified.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: December 27, 1994
    Assignee: EMS-Inventa AG
    Inventors: Werner Stibal, Daniel Boni, Hans Luckert