Patents by Inventor Stephan Limper

Stephan Limper 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).

  • Apparatus and method for distinguishing between flat objects
    Patent number: 7405577
    Abstract: An apparatus and a method for detecting the material of a surface of flat objects on a stack, in particular of objects individually separated from one another in the stack by interlayers, preferably of printing plates. The object is to reliably detect the material of the surface of the object that was taken from the stack before it is provided for further processing. The object is achieved by a sensor apparatus that carries out a measurement of the electrical resistance in the region of the object surface to be determined. For this purpose, contact is made between the surface and sensor electrodes, and a measuring current is conducted through the surface. On the basis of the current intensity determined, a distinction is made as to the material of which the object surface is formed.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: July 29, 2008
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Stephan Limper, Volker Haushahn
  • Apparatus and method for distinguishing between flat objects
    Publication number: 20050193807
    Abstract: An apparatus and a method for detecting the material of a surface of flat objects on a stack, in particular of objects individually separated from one another in the stack by interlayers, preferably of printing plates. The object is to reliably detect the material of the surface of the object that was taken from the stack before it is provided for further processing. The object is achieved by a sensor apparatus that carries out a measurement of the electrical resistance in the region of the object surface to be determined. For this purpose, contact is made between the surface and sensor electrodes, and a measuring current is conducted through the surface. On the basis of the current intensity determined, a distinction is made as to the material of which the object surface is formed.
    Type: Application
    Filed: August 26, 2003
    Publication date: September 8, 2005
    Inventors: Stephan Limper, Volker Haushahn