Patents by Inventor Hartmut Loewen

Hartmut Loewen 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).

  • Optical display elements based on aqueous polymer dispersions
    Patent number: 7214421
    Abstract: Optical display elements comprising a layer made from a deformable material (matrix) and from discrete polymer particles whose distribution in the matrix follows a defined spatial lattice structure.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: May 8, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold J. Leyrer, Christoph Hamers, Holger Schoepke, Helmut Ritter, Hartmut Loewen
  • Optical display elements based on aqueous polymer
    Publication number: 20040005453
    Abstract: Optical display elements comprising a layer made from a deformable material (matrix) and from discrete polymer particles whose distribution in the matrix follows a defined spatial lattice structure.
    Type: Application
    Filed: June 17, 2003
    Publication date: January 8, 2004
    Applicant: BASF Aktiengesellschaft, Ludwigshafen, Germany
    Inventors: Reinhold J. Leyrer, Christoph Hamers, Holger Schoepke, Helmut Ritter, Hartmut Loewen