Patents by Inventor Rolf Kippenhahn

Rolf Kippenhahn 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).

  • Multilayered packaging for greasy products
    Patent number: 7244505
    Abstract: The invention relates to a multilayered packaging for greasy products or part of said packaging, comprising a carrier layer made of a polymer material as main component and at least one layer placed on said carrier layer that does not form the outer side of the packaging, said layer containing a starch derivative as main component. The invention is characterized in the starch derivative is a starch derivative modified with a C2–C6-alkylene oxide. The invention also relates to the use of a C2–C6-alkylene oxide derivatized starch as main component of a layer of a multilayered packaging, which is placed on a carrier layer made of a polymer material in said packaging with the aim of rendering said multilayered packaging grease-tight.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: July 17, 2007
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Rolf Kippenhahn, Thomas Luck, Claudia Schönweitz, Peter Pawlak
  • Multilayered packaging for greasy products
    Publication number: 20050008801
    Abstract: The invention relates to a multilayered packaging for greasy products or part of said packaging, comprising a carrier layer made of a polymer material as main component and at least one layer placed on said carrier layer that does not form the outer side of the packaging, said layer containing a starch derivative as main component. The invention is characterized in the starch derivative is a starch derivative modified with a C2-C6-alkylene oxide. The invention also relates to the use of a C2-C6-alkylene oxide derivatized starch as main component of a layer of a multilayered packaging, which is placed on a carrier layer made of a polymer material in said packaging with the aim of rendering said multilayered packaging grease-tight.
    Type: Application
    Filed: June 29, 2001
    Publication date: January 13, 2005
    Inventors: Rolf Kippenhahn, Thomas Luck, Claudia Schonweitz, Peter Pawlak
  • Method for separating and recovering target polymers and their additives from a material containing polymers
    Publication number: 20040229965
    Abstract: The invention relates to a method for separating target polymers and their additives from a material containing polymers, as a result of which the recovery both of the target polymers and of the additives is made possible. Based on the principle of a selective precipitation, the target polymer is precipitated and subsequently separated from the additives present in solution and dissolved foreign polymers. The separation of the additives from the solution is effected in a further step.
    Type: Application
    Filed: February 25, 2004
    Publication date: November 18, 2004
    Inventors: Andreas Maurer, Gerd Wolz, Martin Schlummer, Thomas Luck, Udo Knauf, Rolf Kippenhahn
  • Method for separating and recovering target polymers and their additives from a material containing polymers
    Publication number: 20030191202
    Abstract: The invention relates to a method for separating target polymers and their additives from a material containing polymers, as a result of which the recovery both of the target polymers and of the additives is made possible. Based on the principle of a selective precipitation, the target polymer is precipitated and subsequently separated from the additives present in solution and dissolved foreign polymers. The separation of the additives from the solution is effected in a further step.
    Type: Application
    Filed: May 22, 2003
    Publication date: October 9, 2003
    Inventors: Andreas Maurer, Gerd Wolz, Martin Schlummer, Thomas Luck, Udo Knauf, Rolf Kippenhahn