CS

Christian Stewen

AK Alfred Kärcher Gmbh & Co. Kg: 2 patents #60 of 242Top 25%
AK Alfred Kärcher Se & Co. Kg: 2 patents #19 of 105Top 20%
📍 Marbach, DE: #4 of 13 inventorsTop 35%
Overall (All Time): #678,604 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
12256875 Portable hard surface cleaning appliance Juergen Zuger, Saulius Martinkenas, Christoph Frohmader, Hannes Belz, Daniel Krohm 2025-03-25
10258207 Portable hard surface cleaning appliance Anne Oberländer, Sandra L. Bartel 2019-04-16
8186005 Vacuum cleaning device Uli Haeussermann 2012-05-29
7867304 Method for cleaning the filters of a vacuum cleaner and vacuum cleaner for carrying out said method Uli Haeussermann 2011-01-11
6891874 Laser amplifier system Steffen Erhard, Adolf Giesen 2005-05-10
6577666 Laser amplification system Steffen Erhard, Adolf Giesen, Martin Karszewski, Andreas Voss 2003-06-10
6438152 Laser amplification system Karsten Contag, Steffen Erhard, Adolf Giesen, Martin Karszewski, Andreas Voss 2002-08-20