Patents by Inventor Carsten Schonfeld

Carsten Schonfeld 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).

  • Patent number: 6267225
    Abstract: A device for conveying thin workpieces for machines used in the printing technology field having at least one movable conveying element having an electrically insulating contact surface supporting at least one workpiece as it is being conveyed, the contact surface of the conveying element being formed with regions of varying charge density by electric charges applied thereto, and the workpiece being held on the contact surface by electrostatic forces, includes a multiplicity of contacts engaging the surface of the conveying element, the multiplicity of contacts including at least one given group thereof, the multiplicity of contacts being disposed transversely to a direction in which the thin workpiece is conveyable by the conveying element and being distributed across the entire width of the workpiece, the multiplicity of contacts being connected to at least one d.c. voltage source.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: July 31, 2001
    Assignee: Heidelberger Druckmascheinen Aktiengesellschaft
    Inventors: Christian Compera, Patrick Metzler, Anton Rodi, Carsten Schönfeld, Peter Schulz, Paul Weiss
  • Patent number: 6067437
    Abstract: A method for fixing a toner image contact-free on a substrate, which includes exposing the toner image to a hot gas containing a significant component of steam; and a device for performing the method.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: May 23, 2000
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Carsten Schonfeld