Patents by Inventor Stephan Homer

Stephan Homer 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 device for producing at least partially open-celled foam films from styrene polymers
    Patent number: 6666998
    Abstract: A method for producing an at least partially open-celled foam foil on a basis of styrene polymers, nucleating agents, surfactants, physical foaming agents and, if required, further additives, such as foreign polymers and auxiliary materials, comprising a twin-screw extruder with identical parallel screws rotating in the same direction, wherein the twin-screw extruder has a length of at least 25 D (D=screw diameter), in particular 30 to 42 D, with a draw-in and plastification zone of a length of 10 to 15 D, and a mixing zone of a length of 3 to 6 D, and a following cooling zone.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: December 23, 2003
    Assignee: Reifenhäuser GmbH & Co. Maschinenfabrik
    Inventors: Ulrich Berghaus, Stephan Homer, Hubert Jansen
  • Method and device for producing at least partially open-celled foam films from styrene polymers
    Publication number: 20020177631
    Abstract: A method for producing an at least partially open-celled foam foil on a basis of styrene polymers, nucleating agents, surfactants, physical foaming agents and, if required, further additives, such as foreign polymers and auxiliary materials, comprising a twin-screw extruder with identical parallel screws rotating in the same direction, wherein the twin-screw extruder has a length of at least 25 D (D=screw diameter), in particular 30 to 42 D, with a draw-in and plastification zone of a length of 10 to 15 D, and a mixing zone of a length of 3 to 6 D, and a following cooling zone.
    Type: Application
    Filed: February 13, 2002
    Publication date: November 28, 2002
    Inventors: Ulrich Berghaus, Stephan Homer, Hubert Jansen