Patents by Inventor Andreas Krahmer

Andreas Krahmer 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).

  • Filter cartridge comprising a weld seam
    Patent number: 10220344
    Abstract: A filter cartridge has a folded filter medium that is formed into a prism at least in regions and comprises two interconnected end folds, and which filter cartridge is constantly or cyclically subjected to stresses, specifically subjected to stresses from dedusting by means of pressure surges, is characterized in that the end folds overlap one another.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: March 5, 2019
    Assignee: CARL FREUDENBERG KG
    Inventors: Karsten Schulz, Georg Hirsch, Andreas Krahmer, Rainer Kaffenberger, Hans Wiegand
  • FILTER CARTRIDGE COMPRISING A WELD SEAM
    Publication number: 20170021299
    Abstract: A filter cartridge has a folded filter medium that is formed into a prism at least in regions and comprises two interconnected end folds, and which filter cartridge is constantly or cyclically subjected to stresses, specifically subjected to stresses from dedusting by means of pressure surges, is characterized in that the end folds overlap one another.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 26, 2017
    Inventors: Karsten Schulz, Georg Hirsch, Andreas Krahmer, Rainer Kaffenberger, Hans Wiegand