Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Leichlingen, DE ranks #1,324 worldwide for total patents filed all time, with 2,541 patents from 270 inventors. Leading employers of inventors based in Leichlingen, DE include Bayer Healthcare, Bayer Cropscience, Bayer Intellectual Property Gmbh.

Showing 1–50 of 270 inventors

Rank Inventor Primary Company Patents
1 Wilhelm Brandes Bayer Healthcare 393
2 Christoph Erdelen Bayer Healthcare 313
3 Rolf Pontzen Bayer Cropscience 90
#4 Jürgen Benting Bayer Intellectual Property Gmbh 79
#5 Astrid Mauler-Machnik Bayer Healthcare 70
#6 Martin Kugler Bayer Healthcare 66
#7 Manfred Fischer Federal-Mogul Burscheid Gmbh 60
#7 Wilfried Beneker C. Rob. Hammerstein 60
#9 Jörg Nico Greul Bayer Cropscience 55
#10 Thomas Svensson Ford 52
#10 Christian Funke Bayer Intellectual Property Gmbh 52
#12 Markus Heil Bayer Healthcare 44
#13 Martin Melchiors Bayer Healthcare 37
#14 Karl H. Schundehutte Bayer Healthcare 36
#15 Hans-Georg Hoppe Bayer Healthcare 31
#16 Anton Kraus Bayer Cropscience 26
#16 Guido Schmidt Poeppelmann Holding Gmbh & Co. Kg 26
#18 Guido Endert BOE 24
#19 Gunther Boehmke Bayer Healthcare 22
#19 Beate Weber Agfa-Gevaert Nv 22
#19 Sascha EILMUS Bayer Cropscience 22
#22 Juergen Benting Bayer Intellectual Property Gmbh 21
#22 Ralph Weber Kortec 21
#24 Hilmar Vits Vits Maschinenbau Gmbh 19
#24 Claus Dreisbach Bayer Healthcare 19
#26 Arno Schmuck Agfa-Gevaert Nv 18
#26 Torsten Heinemann Bayer Healthcare 18
#28 Richard Mittler Federal-Mogul Burscheid Gmbh 17
#28 Andreas Hanke Black & Decker 17
#30 Jochen Kalbe Bayer Healthcare 16
#30 Ursula Krenz Bayer Intellectual Property Gmbh 16
#32 Ulf Bruggemeier Bayer Healthcare 15
#32 Hans Brauer Kocks Technik Gmbh & Co Kg 15
#32 Thomas Böcker Bayer Healthcare 15
#32 Gert-Dieter Tuzar Siemens Aktiengesellschaft 15
#32 Volker Schmitt Kronos International 15
#37 Egon Zich Julius Montz Gmbh 14
#38 Timo Kuhlmann Covestro Deutschland Ag 13
#38 Peter Vehlewald Bayer Healthcare 13
#38 Helmut Hurnik Bayer Healthcare 13
#38 Hans-Georg Rast Bayer Healthcare 13
#42 Manfred Schulze Bayer Healthcare 12
#42 Hans-Hermann Schulz Bayer Healthcare 12
#42 Joachim Rehse Bayer Intellectual Property Gmbh 12
#45 Martin Vaupel Bayer Healthcare 11
#45 Harald Schnegelberger Henkel Kommanditgesellschaft Auf Aktien 11
#45 Thomas Schwarz Instraction Gmbh 11
#45 Uta Sundermeier Henkel Ag & Co. Kgaa 11
#45 Hans-Peter Hoffmann Bayer Healthcare 11
#45 Haireddin Jacobi Troponwerke Gmbh & Co. Kg 11