Stephan Knappmann has been granted 18 US patents while listed as an inventor at Thomson Licensing. The first was granted in 2008 and the most recent in April 2014. Stephan Knappmann ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Stephan Knappmann in Zimmern ob Rottweil, DE.