Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Marl, DE ranks #2,943 worldwide for total patents filed in 2018, with 39 patents from 24 inventors. Leading employers of inventors based in Marl, DE include Evonik Degussa Gmbh, Mitsubishi Polyester Film Gmbh, Merck.

Showing 1–24 of 24 inventors

Rank Inventor Primary Company Patents
1 Dieter Hess Evonik Degussa Gmbh 8
2 Christine Stemmer Evonik Degussa Gmbh 3
2 Denise Ott Evonik Degussa Gmbh 3
2 Juergen Franosch Evonik Degussa Gmbh 3
#5 Reinhard Beuth Evonik Degussa Gmbh 2
#5 Ingo Fischer Mitsubishi Polyester Film Gmbh 2
#7 Hans-Georg Hennemann Evonik Degussa Gmbh 1
#7 Erika Retzlaff Evonik Degussa Gmbh 1
#7 Karsten Koppe Merck 1
#7 Armin Matthias Rix Evonik Operations Gmbh 1
#7 Thomas Hueller Evonik Degussa Gmbh 1
#7 Bettina Ludwig Evonik Degussa Gmbh 1
#7 Sabine Hafkemeyer Evonik Degussa Gmbh 1
#7 Andre Raukamp Evonik Degussa Gmbh 1
#7 Christian Staubach Siemens Aktiengesellschaft 1
#7 Bartholomäus Buchczik Evonik Degussa Gmbh 1
#7 Thomas Gausepohl Illuminoss Medical 1
#7 Wolfgang Tebeek 1
#7 Randolf Kiefer Uhdenora S.P.A. 1
#7 Sven Gröning Technische Universität Dortmund 1
#7 Kerstin Fuchs Evonik Degussa Gmbh 1
#7 Christian Gehring Evonik Degussa Gmbh 1
#7 Hans-Gerd Lueken Evonik Oxeno Gmbh 1
#7 Horst Beyer Goetze Gmbh 1