Patents by Inventor Stefan Fellenberg

Stefan Fellenberg 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 cutting high-tensile sheet metal, and press
    Patent number: 8156780
    Abstract: In a method of cutting high-tensile workpieces, in particular sheet metals of martensite steel, the workpiece is subjected to a bending stress prior and during a shearing process. The bending stress causes a substantial component of a tensile force transverse to a desired cutting contour. Tensile stresses are superimposed to the shearing stresses, which favor the beginning of the workpiece separation. The bending stress is preferably selected so that the resulting tensile stress exists at a side facing the cutting tool.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: April 17, 2012
    Assignee: nanoferenz GmbH
    Inventors: Stefan Fellenberg, Juergen Fahrenbach, Hans-Joerg Schaller
  • Method and Device for Cutting High-Tensile Sheet Metal, and Press
    Publication number: 20080196471
    Abstract: In a method of cutting high-tensile workpieces, in particular sheet metals of martensite steel, the workpiece is subjected to a bending stress prior and during a shearing process. The bending stress causes a substantial component of a tensile force transverse to a desired cutting contour. Tensile stresses are superimposed to the shearing stresses, which favor the beginning of the workpiece separation. The bending stress is preferably selected so that the resulting tensile stress exists at a side facing the cutting tool.
    Type: Application
    Filed: May 12, 2005
    Publication date: August 21, 2008
    Applicant: NANOFERENZ GmbH
    Inventors: Stefan Fellenberg, Juergen Fahrenbach, Hans-Joerg Schaller
  • Nano-optical color embrossing
    Publication number: 20050211114
    Abstract: An apparatus for embossing a surface with a nano-optical color structure includes a monolithic material. The monolithic material is mounted to a carrier and has an active area facing away from the carrier and, in use, towards a surface to be embossed. The active area has a surface structure with at least one predetermined nano structure that causes in the surface to be embossed a structure that generates a predetermined color structure when exposed to visible light.
    Type: Application
    Filed: May 9, 2005
    Publication date: September 29, 2005
    Inventors: Juergen Fahrenbach, Stefan Fellenberg