Patents Represented by Attorney Keynon & Kenyon LLP
  • Patent number: 7056271
    Abstract: A three-dimensional object folded from a flat work piece, particularly a filter element folded from a nonwoven fabric, characterized in that the three-dimensional object (20) is made up of several rows (5, 6, 7) of hollow pyramid elements (30) that are joined in rows and nested into one another.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: June 6, 2006
    Assignee: Firma Carl Freudenberg
    Inventors: Ulrich Schlör, Werner Kadel