Patents by Inventor Harald Eiden

Harald Eiden 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 producing polypropylene films
    Patent number: 8980144
    Abstract: The invention relates to a method for producing a biaxially oriented polypropylene film including at least one layer, which is constructed from propylene polymer B and a propylene polymer that has been recycled once. The method includes heat and melting propylene polymer B in a first extruder and heating a melting a propylene polymer A without a fraction of recycled material in a second extruder. The molten mass of the propylene polymer A is fed to two sides of the propylene polymer molten mass of B such that the propylene polymer A forms border regions of the film during the production process. The two border regions are then cut off after longitudinal and traverse stretching of the film, and melted and mixed together with the propylene polymer B and extruded to form a precursor film in the first extruder. The biaxially oriented polypropylene film comprising a propylene polymer that has been recycled only once is useful for producing capacitors.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: March 17, 2015
    Assignee: Treofan Germany GmbH & Co. KG
    Inventors: Detlef Busch, Harald Eiden, Christian Peters, Josef Schaan
  • METHOD FOR PRODUCING POLYPROPYLENE FILMS
    Publication number: 20140370312
    Abstract: The invention relates to a method for producing a biaxially oriented polypropylene film including at least one layer, which is constructed from propylene polymer B and a propylene polymer that has been recycled once. The film is used in capacitors.
    Type: Application
    Filed: September 4, 2014
    Publication date: December 18, 2014
    Inventors: Detlef BUSCH, Harald EIDEN, Christian PETERS, Josef SCHAAN
  • METHOD FOR PRODUCING POLYPROPYLENE FILMS
    Publication number: 20110236702
    Abstract: The invention relates to a method for producing a biaxially oriented polypropylene film including at least one layer, which is constructed from propylene polymer B and a propylene polymer that has been recycled once. The film is used in capacitors.
    Type: Application
    Filed: December 8, 2009
    Publication date: September 29, 2011
    Applicant: Treofan Germany GmbH & Co. KG
    Inventors: Detlef Busch, Harald Eiden, Christian Peters, Josef Schaan
  • Process for crystallising amorphous plastic granulates
    Patent number: 7771493
    Abstract: A process for crystallizing amorphous polymers whose Tg lies below the crystallite melting point. According to this process, amorphous or partially crystalline polymer grains are exposed in water for a period of at least 30 seconds to a temperature in the polymer crystallization range.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: August 10, 2010
    Assignee: Treofan Germany GmbH & Co. KG
    Inventors: Detlef Busch, Harald Eiden, Bertram Schmidt
  • Process for Crystallising Amorhpous Plastic Granulates
    Publication number: 20070220712
    Abstract: A process is disclosed for crystallising amorphous polymers whose Tg lies below the crystallite melting point. According to this process, amorphous or partially crystalline polymer grains are exposed in water for a period of at least 30 seconds to a temperature in the polymer crystallisation range.
    Type: Application
    Filed: May 13, 2005
    Publication date: September 27, 2007
    Applicant: Treofan Germany GmbH & Co. KG
    Inventors: Detlef Busch, Harald Eiden, Bertram Schmitz