Patents by Inventor Andreas Bürgel

Andreas Bürgel 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).

  • Device for testing the scratch resistance of surfaces
    Patent number: 6852018
    Abstract: A device for testing the scratch resistance of a surface of a test specimen by means of a gas stream charged with solid particles, comprising: a tube, having an entry and an exit, for directing the gas stream on to a specimen holder with the surface to be tested, a means for providing the gas stream, and a metering device positioned along the tube for metering the solid particles into the gas stream, wherein a tube part is angled at an angle in the region of the tube exit and the angled tube part has, at the angle, an opening at which the specimen holder is positioned such that the gas stream is directed on to the specimen holder.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: February 8, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Bürgel, Georg Lamp, Robert Maleika, Leslaw Mleczko
  • Device for testing the scratch resistance of surfaces
    Publication number: 20040092215
    Abstract: A device for testing the scratch resistance of a surface of a test specimen by means of a gas stream charged with solid particles, comprising:
    Type: Application
    Filed: October 22, 2003
    Publication date: May 13, 2004
    Inventors: Andreas Burgel, Georg Lamp, Robert Maleika, Leslaw Mleczko